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BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251009T120000
DTEND;TZID=Australia/Sydney:20251009T123000
DTSTAMP:20260528T051235
CREATED:20250827T034524Z
LAST-MODIFIED:20250827T034525Z
UID:15164-1760011200-1760013000@www.atnf.csiro.au
SUMMARY:Colearnium: John Tuthill (CSIRO)
DESCRIPTION:A Single-Chip Wideband Digital Receiver for the Australia Telescope Compact Array Upgrade\n\nThis week John Tuthill will present on “A Single-Chip Wideband Digital Receiver for the Australia Telescope Compact Array Upgrade“. \n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-john-tuthill-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251015T150000
DTEND;TZID=Australia/Sydney:20251015T160000
DTSTAMP:20260528T051235
CREATED:20251013T225020Z
LAST-MODIFIED:20251013T225021Z
UID:15937-1760540400-1760544000@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Ben Stappers (Jodrell Bank / University of Manchester)
DESCRIPTION:Hunting FRBs and Transients with MeerTRAP \n\nAbstract: \n\nMeerTRAP (more TRAnsients and Pulsars) is a fully commensal program running on the MeerKAT telescope to search for transients including FRBs and radio emitting neutron stars. It utilises the excellent sensitivity and wide bandwidth of the MeerKAT telescope to enable it to see faint/distant sources both inside and outside our Galaxy. I will describe the MeerTRAP experiment including our real time analysis systems and our transient buffer which allows us to localise FRBs. I will present some highlights of the FRBs that we have discovered so far including some which have been localised and have associated (high) host galaxy redshifts. I will also present some results on the two repeating FRBs that we have identified. MeerTRAP works with the MeerLICHT optical telescope to undertake simultaneous observations and I will present the latest results from those studies. MeerTRAP has also discovered more than 100 new Galactic transients and I will summarise their properties and discuss some of the particularly interesting sources\, especially those with longer than typical pulsar spin periods. I will also present the detection of a particularly interesting Galactic transient. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-ben-stappers-jodrell-bank-university-of-manchester/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2025/10/colloq_20251014.jpg
ORGANIZER;CN="Joshua Preston Pritchard":MAILTO:joshua.pritchard@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251016T120000
DTEND;TZID=Australia/Sydney:20251016T123000
DTSTAMP:20260528T051235
CREATED:20251001T090049Z
LAST-MODIFIED:20251001T090050Z
UID:15789-1760616000-1760617800@www.atnf.csiro.au
SUMMARY:Colearnium: Giulia Macario (CSIRO)
DESCRIPTION:Update from the SKA-Low science commissioning\n\nThis week Giulia Macario will present on “Update from the SKA-Low science commissioning“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-giulia-macario-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251022T150000
DTEND;TZID=Australia/Sydney:20251022T160000
DTSTAMP:20260528T051235
CREATED:20251020T225636Z
LAST-MODIFIED:20251020T225637Z
UID:15989-1761145200-1761148800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Kelly Gourdji (ATNF)
DESCRIPTION:Revisiting GW170817 at milliarcsecond scale: high-precision constraints on jet geometry and Hubble’s constant\n\nAbstract: \n\nThe historic detection of gravitational waves from the electromagnetically bright binary neutron star merger GW170817 enabled the first standard siren measurement of Hubble’s constant (H0). The accuracy and precision of this measurement depends crucially on how well the merger inclination angle is constrained\, given its strong covariance with luminosity distance. Modeling the light curve of the jet’s afterglow provides constraints on inclination\, but is highly dependent on the similarly uncertain jet opening angle. Past studies have improved on this by invoking high-resolution radio observations\, obtained through very long baseline interferometry\, to constrain the viewing angle. In this talk\, I will present our Bayesian visibility-plane model-fitting framework that provides a more informed and robust measurement of the viewing geometry of GW170817\, by including all relevant data\, robustly handling systematic uncertainties\, rigorously sampling model parameter space and using new hydrodynamical jet models. We extend our framework to fit for H0 directly\, and consider various plausible peculiar velocity corrections to present a new and improved standard siren measurement of H0. Strikingly\, we find our result to be in better agreement with one of the two precise and independent H0 measurements that are famously in tension. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-kelly-gourdji-atnf/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/10/colloq_20251022.png
ORGANIZER;CN="Joshua Preston Pritchard":MAILTO:joshua.pritchard@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251023T120000
DTEND;TZID=Australia/Sydney:20251023T123000
DTSTAMP:20260528T051235
CREATED:20251001T090157Z
LAST-MODIFIED:20251002T021018Z
UID:15795-1761220800-1761222600@www.atnf.csiro.au
SUMMARY:Colearnium: Stefan Harrer (CSIRO)
DESCRIPTION:Introducing Sciansa: an agentic AI-powered lab assistant for scientists\n\nThis week Stefan Harrer will present on “Introducing Sciansa: an agentic AI-powered lab assistant for scientists“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-stefan-harrer-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251027T150000
DTEND;TZID=Australia/Sydney:20251027T160000
DTSTAMP:20260528T051235
CREATED:20251026T222558Z
LAST-MODIFIED:20251026T222559Z
UID:16012-1761577200-1761580800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Jessica Dempsey (ASTRON / SKAO)
DESCRIPTION:Learning in low frequency: Charting a path for SKA from LOFAR and ASTRON\n\nAbstract: \n\nLOFAR is one of the highest-impact Observatories on the planet. I will discuss its achievements\, technical and scientifically and how vital the path to LOFAR has been\, and will be\, for SKA-Low success. LOFAR2.0 is currently finishing construction and will be operational at the end of 2026. I will show the benefits of aligning the parallel projects\, both scientifically and technically\, and the crucial role the community can play in accelerating the success of both telescopes\, as well as other ASTRON technology initiatives with strong future synergies with next-generation Australian radio astronomy plans. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-jessica-dempsey-astron-skao/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2025/10/Colloq-27102025-scaled.jpg
ORGANIZER;CN="Joshua Preston Pritchard":MAILTO:joshua.pritchard@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251030T120000
DTEND;TZID=Australia/Sydney:20251030T123000
DTSTAMP:20260528T051235
CREATED:20251008T083950Z
LAST-MODIFIED:20251008T083950Z
UID:15918-1761825600-1761827400@www.atnf.csiro.au
SUMMARY:Colearnium: Harry Qiu (CSIRO)
DESCRIPTION:SCEPTer: simulating constellation emission patterns in telescopes\n\nThis week Harry Qiu will present on “SCEPTer: simulating constellation emission patterns in telescopes“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-harry-qiu-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251105T150000
DTEND;TZID=Australia/Sydney:20251105T160000
DTSTAMP:20260528T051235
CREATED:20251103T032208Z
LAST-MODIFIED:20251103T032208Z
UID:16080-1762354800-1762358400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Michael Busch (NRAO)
DESCRIPTION:OH as a Tracer of “CO-Dark” Gas in the Interstellar Medium Near and Far\n\nAbstract: \n\nMolecular clouds are the birthplace of stars. It is unfortunate then that the most abundant interstellar molecule\, molecular hydrogen (H2)\, is practically invisible in cold molecular clouds (T<100K). Astronomers typically use the second most abundant molecule\, carbon monoxide (CO)\, to trace the bulk distribution of H2 in our galaxy and many others because of its relative brightness and abundance. CO observations alone\, however\, fail to trace a significant amount of molecular gas\, known as “CO-dark” molecular gas. In this talk\, I will review the observational evidence for the existence of a significant amount of “CO-dark” gas in the galaxy\, then recount the efforts in the 2010s to use OH with the Green Bank Telescope (GBT) to observe the “CO-dark” gas in the Outer galaxy (Busch et al. 2019\, 2021). Then I will present recent results on an extremely sensitive pilot survey for 18cm OH emission towards the southern disk of the Andromeda Galaxy\, in which trace the large-scale galactic “CO-Dark” molecular gas with the GBT (Busch 2024). A follow-up Andromeda survey is presented. I will discuss recent efforts in combining HCO+ absorption in the diffuse ISM with OH emission to understand the properties of diffuse molecular gas in the ISM and conclude on future work with collaborators in Australia regarding OH as a tracer of “CO-dark” gas. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-michael-busch-nrao/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/ColumnDensityHNucleiM31.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251106T120000
DTEND;TZID=Australia/Sydney:20251106T123000
DTSTAMP:20260528T051235
CREATED:20250923T033638Z
LAST-MODIFIED:20250923T050121Z
UID:15728-1762430400-1762432200@www.atnf.csiro.au
SUMMARY:Colearnium: Duy Nguyen (CSIRO)
DESCRIPTION:A Single-Chip Wideband Digital Receiver for the Australia Telescope Compact Array Upgrade\n\nThis week Duy Nguyen will present on “Modernizing Legacy: Wrapping a 25+ Year Computational Fluid Dynamics Codebase“. \n\n\n\nModernizing Legacy: Wrapping a 25+ Year Computational Fluid Dynamics Codebase \n\nAuthors: Duy Nguyen\, Tisham Dhar\, Peter Wang\, Jean-Michel Perraud\, Klaus Joehnk.Computational Fluid Dynamics (CFD) is the science of using numerical analysis and data structures to solve many processes influencing fluid behavior. CFD requires many complex mathematical representations through various ODE and PDE solvers\, and has traditionally been written in Fortran or C++\, mostly for their speed in doing massively parallel computations\, such as handling array operations and object-oriented features. As such\, those codebases have a long-standing legacy in scientific computing\, and many established CFD codes are written in them. However\, as time goes on\, we witness the popularity of a new generation of codebases such as Python\, which stems from its simplicity\, versatility\, and strong community. Extensive libraries and frameworks make Python a popular choice for many developers and scientists alike. It is\, however\, not a preferred language for core CFD code due to performance limitations and its difficulties with parallelization. This talk explores modernizing a 25+ year-old C++ CFD model\, essential for simulating lake conditions\, particularly for predicting temperature variations and algal bloom dynamics\, by wrapping it with [C-interop] for seamless Python interoperability. Beyond integration\, we leverage [Optuna]\, a powerful hyperparameter optimization framework\, to fine-tune models efficiently\, transitioning from manual parameter tuning on a laptop to a distributed\, scalable workflow powered by Dask Distributed and JupyterHub. This transformation enables automated hyperparameter optimization across many lakes in Australia\, helping researchers investigate trends in tuning parameters and derive deeper environmental insights.Attendees will gain insights into:– Wrapping legacy C++ water quality models with CFFI for Python-driven analysis.– Automating and scaling hyperparameter tuning using Optuna across multiple lake ecosystems.– Utilizing Dask Distributed and JupyterHub to accelerate environmental simulations.– Extracting insights from hyperparameter trends to refine large-scale water quality predictions. For researchers\, engineers\, and data scientists working in environmental modeling\, this session provides practical strategies for modernizing legacy systems\, scaling model optimization\, and enhancing predictive accuracy without sacrificing scientific integrity. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-duy-nguyen-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251112T150000
DTEND;TZID=Australia/Sydney:20251112T160000
DTSTAMP:20260528T051235
CREATED:20251110T011649Z
LAST-MODIFIED:20251110T011650Z
UID:16115-1762959600-1762963200@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Dan Rybarczyk (University of Wisconsin-Madison)
DESCRIPTION:New constraints on CO-dark molecular gas properties in the diffuse ISM: Insights from 21cm and 3mm absorption observations\n\nAbstract: \n\nThe evolution of the multiphase interstellar medium (ISM) drives galaxy evolution. The transition from diffuse atomic gas to denser molecular clouds sets the initial conditions for star formation\, so plays a critical role in this evolution. However\, since molecular hydrogen (H2) is invisible in many diffuse environments\, observational constraints on the atomic-to-molecular transition remain limited. CO emission is often used to trace H2\, but in the diffuse ISM\, a significant fraction of H2 is not associated with any CO emission (the “CO-dark” molecular gas). Thankfully\, HCO+ absorption at 3mm is an excellent tracer of diffuse molecular gas — with a stable abundance and formation/survival at low column density\, HCO+ is a reliable probe of the H2 column density in the diffuse ISM. Here we report observations of HI\, HCO+\, and CO in absorption toward five diffuse lines of sight. In all of these directions\, we detect a kinematically broad\, CO-dark signature in HCO+ absorption that is associated with nearly all the cold atomic gas in these directions. We constrain the CO abundances in these directions\, which are consistent with chemical model predictions and account for the non-detection of CO. In fact\, we show that CO emission or absorption are unlikely to be detected where N(H2) < 7E19 cm^-2\, while HCO+ absorption is readily detected for N(H2) > ~fewE18 cm^-2\, opening an important window on the HI-to-H2 transition. The diffuse\, CO-dark gas associated with broad HCO+ absorption has systematically different properties\, including a lower fraction of cold atomic gas and a lower molecular fraction\, than CO-bright gas. These observations therefore offer insights on the HI-to-H2 transition that are inaccessible with CO observations.  I will briefly discuss future work aimed at uncovering the spatial structure of this diffuse\, partially-molecular gas — key to understanding the physics of this critical stage of galaxy evolution. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-dan-rybarczyk-university-of-wisconsin-madison/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/3C111_absorption.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251118T150000
DTEND;TZID=Australia/Sydney:20251118T160000
DTSTAMP:20260528T051235
CREATED:20251116T222856Z
LAST-MODIFIED:20251116T222856Z
UID:16142-1763478000-1763481600@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Jordan Collier (Australian SKA Regional Centre)
DESCRIPTION:Science with the AusSRC: Building on the Precursors Towards the SKA\n\nAbstract: \n\nThe Australian SKA Regional Centre (AusSRC) is Australia’s portion of the international SKA Regional Centre Network (SRCNet)\, which aims to establish and build capability to support the Australian and international SKA science communities\, thereby ushering in the next era of astronomical discovery and advanced data processing.  This presentation will cover AusSRC’s science support\, with highlights from our current SRCNet activities and current round of Australian SKA precursor support\, including visibility compression\, and the development and implementation of science workflows for representative SKA science\, with particular focus on visualisation and analysis capabilities within the Cube Analysis and Rendering Tool for Astronomy (CARTA). A summary will be presented of our future plans\, in transitioning toward supporting SKA science verification. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-jordan-collier-australian-ska-regional-centre/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/image-2025-9-10_22-14-11-scaled.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251120T120000
DTEND;TZID=Australia/Sydney:20251120T123000
DTSTAMP:20260528T051235
CREATED:20251014T014747Z
LAST-MODIFIED:20251118T071209Z
UID:15943-1763640000-1763641800@www.atnf.csiro.au
SUMMARY:Colearnium: Sander Voss (CSIRO)
DESCRIPTION:MiniXRF: Developing a Lunar X-Ray Fluorescence payload for small platforms\n\nThis week Sander Voss will present on “MiniXRF: Developing a Lunar X-Ray Fluorescence payload for small platforms“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nSamuel (On behalf of the co-learnium organisers) \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-sander-voss-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251121T080000
DTEND;TZID=Australia/Sydney:20251216T170000
DTSTAMP:20260528T051235
CREATED:20251203T010158Z
LAST-MODIFIED:20251203T010415Z
UID:16319-1763712000-1765904400@www.atnf.csiro.au
SUMMARY:Apply for the 2026APR semester
DESCRIPTION:Overview\n\nWe’re pleased to announce that proposals for ATNF observing time are now open for the 2026APR semester. Grab your chance to use some of our new receivers and facilities. \n\nApply now for: \n\n\nOur ASKAP radio telescope (including CRACO)\n\n\n\nOur Australia Telescope Compact Array\n\n\n\nMurriyang\, our 64-m Parkes radio telescope\n\n\n\nThe Tidbinbilla radio antennas: the 70-m antenna Ballima (DSS-43) \, and the 34-m (DSS-34) antenna;\n\n\n\nThe Long Baseline Array\n\n\nMark your calendars: the deadline for all proposals is 06:00 UT (17:00 Sydney local time) on Tuesday\, 16 December 2025. \n\nTo submit your proposal\, visit our online proposal application system\, OPAL. \nMore information\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/apply-for-the-2026apr-semester/
LOCATION:WA
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2024/09/E9A915740-OBERSVERS-6-scaled.jpg
ORGANIZER;CN="George Hobbs":MAILTO:george.hobbs@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251121T110000
DTEND;TZID=Australia/Sydney:20251121T120000
DTSTAMP:20260528T051235
CREATED:20251117T221855Z
LAST-MODIFIED:20251120T051718Z
UID:16167-1763722800-1763726400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Anna Ivleva (Observatory of Munich / Ludwig Maximilian University)
DESCRIPTION:Odd Radio Circles (ORCs): probing radio features at group scales with simulations\n\nAbstract: \n\nExtragalactic radio astronomy has proven to be immensely useful in the study of high energy particle physics by constraining the acceleration of cosmic ray electrons and their subsequent synchrotron emission. Investigations of galaxy clusters have shown to be particularly fruitful\, since such massive environments grant favourable conditions for efficient particle acceleration via merger driven shocks. Yet\, a new class of radio objects discovered only a few years ago imposes the question if also merger shocks in less massive systems can accelerate CR electrons to GeV energies. Specifically\, a growing number of observations is pointing towards the existence of ringlike features around small galaxy groups  and even Milky Way-like objects\, accordingly titled Odd Radio Circles (ORCs). Recent works have proposed that these could be interpreted as radio analogs to the merger shocks observed in more massive systems. However\, ORCs are appearing in a colder and less magnetized medium than the radio features in galaxy clusters\, challenging particle acceleration  mechanisms in more constraining environments. Now\, by interpreting multiple observed ORCs at different stages as an evolutional time sequence and comparing them to simulations of such systems\, one can infer underlying properties of these unique features\, while simultaneously testing the limits of diffusive shock acceleration (DSA). To this end\, I will present the first of its kind magnetohydrodynamical simulation of a galaxy group\, utilising on-the-fly treatment of spectral cosmic rays. I will study the emerging radio features and discuss both similarities and differences to the observed counterparts. Finally\, I will review the relative importance of DSA in the formation of ORCs compared to galactic sources of high energy particles\, such as supernovae and AGN. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-anna-ivleva-observatory-of-munich-ludwig-maximilian-university/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/talk_graphic.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251126T150000
DTEND;TZID=Australia/Sydney:20251126T160000
DTSTAMP:20260528T051235
CREATED:20251123T222415Z
LAST-MODIFIED:20251123T222416Z
UID:16208-1764169200-1764172800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Jennifer West (Dominion Radio Astrophysical Observatory)
DESCRIPTION:Is the heliopause seen in radio synchrotron emission?\n\nAbstract: \n\nDiffuse radio synchrotron emission originating in the Milky Way fills the entire sky\, even at high Galactic latitudes. The emission is highly linearly polarised\, and comes from high energy CRs moving in the Galaxy’s magnetic field. Planck has measured the orientation of this emission and has mapped the magnetic field pattern across the sky\, however\, we do not know if the origin of the pattern is distant (tracing the large-scale magnetic field) or nearby (tracing the Local Bubble\, a massive superbubble where our Sun now resides). The reality is the emission must originate at a wide range of distances. In this talk\, I will present evidence that some of this emission has its origin in the interaction between the heliopause and the very local interstellar magnetic field. The emission is polarised\, and traces the local interstellar magnetic field as it wraps around the heliosphere at the heliopause boundary\, which is related to the Sun’s motion through space\, and which has previously been revealed through a bright ribbon of emission detected by NASA’s Interstellar Boundary Explorer (IBEX). \n\nPlease note that the event timezone is AEDT (UTC+11 hrs) \n\n \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-jennifer-west-dominion-radio-astrophysical-observatory/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/PastedGraphic-1.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251127T120000
DTEND;TZID=Australia/Sydney:20251127T123000
DTSTAMP:20260528T051235
CREATED:20251125T024527Z
LAST-MODIFIED:20251125T024528Z
UID:16229-1764244800-1764246600@www.atnf.csiro.au
SUMMARY:Colearnium: Adriana Parra Ruiz (CSIRO)
DESCRIPTION:‘Artificial Intelligence in 2030 and beyond’: lessons from the Science and Technology in Society forum\n\nThis week Adriana Parra Ruiz will present on “‘Artificial Intelligence in 2030 and beyond’: lessons from the Science and Technology in Society forum“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-adriana-parra-ruiz-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251203T120000
DTEND;TZID=Australia/Sydney:20251203T130000
DTSTAMP:20260528T051235
CREATED:20251118T071516Z
LAST-MODIFIED:20251127T060200Z
UID:16181-1764763200-1764766800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Sam Taziaux (Ruhr University Bochum)
DESCRIPTION:MEDUSA  — Magnetic-field Evolution in Dwarf galaxies from Ultra-deep SKA Analysis  \n\n\nAbstract: \n\nDwarf galaxies are an important class of galaxies\, which are known to serve as proxy for the early Universe and play a crucial role in the formation and evolution of larger galaxies. To understand the underlying emission mechanism and the physics that drive the radiation far away from their origin\, we perform radio continuum polarimetry studies using deep MeerKAT observations. With the MEDUSA (Magnetic field Evolution in Dwarf galaxies Using SKA Analysis) project\, we present to-date the largest radio polarimetry study of dwarf galaxies\, including HI kinematics. Analysis of the spectrum reveals potential energy losses with rapid dissipation of electrons over kiloparsec scales\, a phenomenon contrasting sharply with observations from grand spiral galaxies. Furthermore\, small-scale dynamos in the star-fomation knots and a correlation between the level of depolarisation and the star formation histories deepen the understanding of this low mass systems. These findings provide evidence of intense material feedback into the intergalactic medium\, a process expected to be prevalent in the protogalaxies of the early Universe.  \n\nPlease note that the event timezone is AWST (UTC+8 hrs) \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\n \n\n \n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-sam-taziaux-ruhr-university-bochum/
LOCATION:26 Dick Perry Ave\, Kensington WA 6151\, 26 Dick Perry Avenue\, Kensington\, Washington\, 6151
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2025/11/sam_taziaux_apad.png
ORGANIZER;CN="Gemma Anderson":MAILTO:gemma.anderson@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251204T120000
DTEND;TZID=Australia/Sydney:20251204T123000
DTSTAMP:20260528T051235
CREATED:20251201T030309Z
LAST-MODIFIED:20251201T030310Z
UID:16270-1764849600-1764851400@www.atnf.csiro.au
SUMMARY:Colearnium: Phil Collins (CSIRO)
DESCRIPTION:Contractor HSE Management – Procedure awareness\n\nThis week Phil Collins will present on “Contractor HSE Management – Procedure awareness“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-phil-collins-csiro-4/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251211T120000
DTEND;TZID=Australia/Sydney:20251211T123000
DTSTAMP:20260528T051236
CREATED:20251209T001934Z
LAST-MODIFIED:20251209T001935Z
UID:16349-1765454400-1765456200@www.atnf.csiro.au
SUMMARY:Colearnium: Minh Huynh (CSIRO)
DESCRIPTION:Complex Projects: The Vasa\, and how not to build a ship\n\nThis week Minh Huynh will present on “Complex Projects: The Vasa\, and how not to build a ship“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-minh-huynh-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20251218T120000
DTEND;TZID=Australia/Sydney:20251218T123000
DTSTAMP:20260528T051236
CREATED:20251217T055146Z
LAST-MODIFIED:20251217T055147Z
UID:16395-1766059200-1766061000@www.atnf.csiro.au
SUMMARY:Colearnium: LJ Spriggs (CSIRO)
DESCRIPTION:Galactic Archaeology through Chemical Cartography\n\nThis week LJ Spriggs will present on “Galactic Archaeology through Chemical Cartography“. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-lj-spriggs-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260122T120000
DTEND;TZID=Australia/Sydney:20260122T123000
DTSTAMP:20260528T051236
CREATED:20260119T022553Z
LAST-MODIFIED:20260119T214413Z
UID:16580-1769083200-1769085000@www.atnf.csiro.au
SUMMARY:Colearnium: Jack Steele (CSIRO)
DESCRIPTION:How CSIRO engages with government\n\nThis week Jack Steele will present on “How CSIRO engages with government“. \n\nWhat are ‘Estimates’ and what is CSIRO’s role? How do we deal with ‘our’ Minister? What’s the latest on the Strategic Examination of R&D and the CSIRO parliamentary inquiry? What does it mean to say that CSIRO is part of government\, and how does that affect our engagement with them? \n\nAt this co-learnium hear from one of CSIRO’s government experts\, Jack Steele\, on how and why CSIRO works with government and Ministers across a range of issues. There will be plenty of useful tips and time for questions. \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-jack-steele-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260128T150000
DTEND;TZID=Australia/Sydney:20260128T160000
DTSTAMP:20260528T051236
CREATED:20260122T040557Z
LAST-MODIFIED:20260122T040557Z
UID:16698-1769612400-1769616000@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Ashna Gulati (University of Sydney) 
DESCRIPTION:From Jets to Mergers: Multiwavelength Signatures of Synchrotron Transients\n\nAbstract: \n\nSynchrotron transients arise from some of the most energetic explosions in the Universe and trace the interaction of relativistic or sub-relativistic outflows with their surrounding environments. These interactions generate shocks that accelerate particles and amplify magnetic fields\, producing broadband synchrotron emission. While the underlying emission mechanism is broadly similar across sources\, differences in progenitor systems give rise to a wide range of outflow velocities\, energies\, and light-curve behaviours. Broadband observations are therefore a powerful tool for probing the physics of these extreme events\, from compact object interactions to stellar explosions. \n\nIn this talk\, I present results from three complementary approaches to studying synchrotron transients: targeted wide-field radio surveys\, untargeted extreme transient searches\, and rapid response follow-up. I discuss late-time ASKAP searches for radio afterglows from compact object mergers detected by LIGO–Virgo\, the discovery and detailed characterisation of the luminous and long-lived extragalactic radio transient ASKAP J0055–2558\, and a comprehensive radio-to-X-ray study of the exceptionally bright GRB 240825A. Together\, these studies demonstrate how broadband observations enable robust constraints on relativistic outflows and establish radio surveys and electromagnetic follow-up as a critical tool for exploring the extreme transient Universe in the SKA era. \n\nPlease note that the event timezone is AEDT (UTC+11 hrs) \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-ashna-gulati-university-of-sydney/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2026/01/A_gulati_colloquium.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260129T120000
DTEND;TZID=Australia/Sydney:20260129T123000
DTSTAMP:20260528T051236
CREATED:20260127T031732Z
LAST-MODIFIED:20260127T031733Z
UID:16711-1769688000-1769689800@www.atnf.csiro.au
SUMMARY:Colearnium: Carmen Martinez Harris & Michael Cowley (QUT)
DESCRIPTION:A Framework for Preserving Indigenous Astronomy in SEQ\n\nThis week Carmen Martinez Harris & Michael Cowley will present on “A Framework for Preserving Indigenous Astronomy in SEQ“. \n\n\n\nPlease let me know if you’re willing to present at a future Co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-carmen-martinez-harris-michael-cowley-qut/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260204T150000
DTEND;TZID=Australia/Sydney:20260204T160000
DTSTAMP:20260528T051236
CREATED:20260129T232023Z
LAST-MODIFIED:20260129T232024Z
UID:16754-1770217200-1770220800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Kovi Rose (University of Sydney) 
DESCRIPTION:Probing the Timescales of Radio Variability: From Late-time Supernovae Re-Brightening to Long Period Transients\n\nAbstract: \n\nWe have entered the age of big data in astrophysics and radio astronomy is no exception. Wide-field surveys with the Australian SKA Pathfinder (ASKAP) radio telescope are finding millions of radio-bright sources in the southern skies. In this talk I will speak about three recent discoveries and their implications on our understanding of stellar magnetism in fully convective stars\, binary evolution in accreting systems\, and the mass-loss history of supernova progenitors. The first comes from our detection of periodic bursts from an ultracool brown dwarf\, the latest spectral type star ever found to produce radio emission. Second\, we have found orbitally-modulated X-ray and radio pulses from a newly discovered long period transient. And finally\, we are finding supernovae re-brightening years after their optical discovery\, as the blast wave interacts with shells of circumstellar material. Finding and studying these rare transients is helping us explore astrophysical environments that cannot be studied on Earth. \n\nPlease note that the event timezone is AEDT (UTC+11 hrs) \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-kovi-rose-university-of-sydney/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2026/01/accreting_WD_visual-scaled.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260205T000000
DTEND;TZID=Australia/Sydney:20260205T235959
DTSTAMP:20260528T051236
CREATED:20260128T010007Z
LAST-MODIFIED:20260202T085027Z
UID:16661-1770249600-1770335999@www.atnf.csiro.au
SUMMARY:S&A Vacation Student Symposium
DESCRIPTION:One day symposium where undergraduate students will give a short talk on the project they have worked on over the summer\n\nThe symposium will be held in person at two locations and also online\, commencing with an introductionfrom S&A Director\, Dr Douglas Bock.Marsfield Lecture Theatre\, NSW at 11:30 am AEDTKensington Auditorium\, WA at 8:30 am AWSTLink to the program  \n\nOrganiser\n\nEvent details \nDownload iCal
URL:https://www.atnf.csiro.au/event/sa-vacation-student-symposium/
LOCATION:WA
CATEGORIES:Symposium
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2026/01/VacStudentsAtParkes_15Jan2026_01-scaled.jpeg
ORGANIZER;CN="Robert Hollow":MAILTO:robert.hollow@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260212T120000
DTEND;TZID=Australia/Sydney:20260212T123000
DTSTAMP:20260528T051236
CREATED:20260210T025623Z
LAST-MODIFIED:20260210T025624Z
UID:16953-1770897600-1770899400@www.atnf.csiro.au
SUMMARY:Colearnium: Tisham Dhar (CSIRO)
DESCRIPTION:Earth Observation and Helio physics foundation models\n\nThis week Tisham Dhar will present on “Earth Observation and Helio physics foundation models“. \n\n \n\n \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-tisham-dhar-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260218T100000
DTEND;TZID=Australia/Sydney:20260219T170000
DTSTAMP:20260528T051236
CREATED:20251203T004649Z
LAST-MODIFIED:20260209T013132Z
UID:16311-1771408800-1771520400@www.atnf.csiro.au
SUMMARY:ATNF Futures 2030 Workshop 
DESCRIPTION:Overview\n\nThis workshop invites the Australian community to present science and technology ideas for the post-2030 era that deliver transformational advances with existing or upgraded facilities and new demonstrators in the SKA era. \n\nInyarrimanha Ilgari Bundara\, our Murchison Radio-astronomy Observatory is one of the best sites for radio astronomy observations in the world\, and the ATNF should take advantage of its unique environment. With SKA-Mid and SKA-Low telescopes coming online towards the end of the decade for science verification and full operations\, and DSA-2000 operating from the late 2020s\, it is timely for the community to start planning for post-2030 science and technology pathways. \n\nThe ASKAP telescope was built to: \n\n\nHelp establish an observatory site for the SKA Observatory’s SKA-Low telescope\, and\n\n\n\nDemonstrate SKA survey science technologies.\n\n\nFollowing the construction of ASKAP\, CSIRO ran an open proposal process\, and initiated the 5-year Science Survey Projects\, which are still in progress. \n\nThe first two aims have been achieved\, and the surveys are planned to be completed by the end of the decade. \n\nWe have supplied a document outlining a set of broad facility and technology concepts\, and the boundary conditions for the discussion. An ASKAP upgrade path is one of the concepts provided for discussion: \nConcept documentPDF450 KB\nWe will then invite abstracts for presentations that take one or more of these concepts and present a scientific and/or technology vision. These can be submitted via the registration form.  \n\nAims of the Workshop\n\n\nTo canvas ideas on the unique and world-leading science that ATNF can do in the 2030s\n\n\n\nTo bring the Australian community into the conversation about the future of mid-high frequency radio astronomy\n\n\n\nTo generate new ideas and collaborations within Australia and internationally.\n\n\nLocation\n\nIn-person at Marsfield and online \n\nRegistration\n\nAbstract submission has closed. Any abstracts proposed through the form will not be considered. Registration for in-person attendance has now closed. Online registration remains open. \n\n \nOnline registration\nOnline details will be provided closer to the date. \n\nOrganiser\n\nOrganising Committee: \n\n\nCathryn Trott\n\n\n\nGeorge Hobbs\n\n\n\nKelly Gourdji\n\n\n\nJosh Preston Pritchard\n\n\n\nAidan Hotan\n\n\n\nNithya Thyagarajan\n\n\n\nKeith Bannister\n\n\nEvent details\nDownload iCal\n\nColloquiaRegister
URL:https://www.atnf.csiro.au/event/atnf-futures-2030-workshop/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2024/09/WAM_ASKAP_000003-scaled.jpg
ORGANIZER;CN="Prof Cathryn Trott":MAILTO:cathryn.trott@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260225T120000
DTEND;TZID=Australia/Sydney:20260225T130000
DTSTAMP:20260528T051236
CREATED:20260224T064725Z
LAST-MODIFIED:20260224T065328Z
UID:17584-1772020800-1772024400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Joe Grundy (Curtin University)
DESCRIPTION:Investigating the Complex Radio Spectra and Infrared-Radio Correlation in Nearby Starforming Galaxies\n\nAbstract: \n\nIn my recently accepted thesis\, I examined the radio continuum emission of galaxies to determine how the physical processes that occur within galaxies modify the radio spectral energy distribution and physical distribution of radio emission. I studied the resolved radio continuum emission of 27 nearby star forming galaxies with facilities including MWA\, ASKAP\, ATCA and ALMA to examine the impact of cosmic ray electron energy loss and radio continuum absorption mechanisms as well as cosmic ray transport on the radio spectral energy distribution and their relations to a galaxies physical properties. I have also examined the relationships between radio continuum emission and star formation through the infrared to radio correlation and how these relationships are affected by physical processes within galaxies. Overall I find that the radio continuum emission of star forming galaxies is much more complex than simple two component synchrotron and free-free power law emission with factors such as ionisation losses\, synchrotron losses and free-free absorption impacting the radio emission differently in each galaxy depending on a galaxies size\, star formation rate and gas properties. A thorough understanding of the links between the physical properties of a galaxy and its radio spectral energy distribution is vital to be able to better calibrate radio star formation rate measures in preparation for future broad-band\, all-sky radio surveys with telescopes like the SKA. \n\nPlease note that the event timezone is AWST (UTC+8 hrs) \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-joe-grundy-curtin-university/
LOCATION:CSIRO – Kensington\, Australian Resources Research Centre (ARRC)\, 26 Dick Perry Ave\, Kensington\, WA\, 6101\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/png:https://www.atnf.csiro.au/wp-content/uploads/2026/02/joe_grundy_apad.png
ORGANIZER;CN="Gemma Anderson":MAILTO:gemma.anderson@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260226T120000
DTEND;TZID=Australia/Sydney:20260226T123000
DTSTAMP:20260528T051236
CREATED:20260223T014835Z
LAST-MODIFIED:20260223T014921Z
UID:17570-1772107200-1772109000@www.atnf.csiro.au
SUMMARY:Colearnium: Andrew Bolin (CSIRO)
DESCRIPTION:A peek inside Port Kembla Steelworks\n\nThis week Andrew Bolin will provide “A peek inside Port Kembla Steelworks“. \n\n \n\n \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-andrew-bolin-csiro-2/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260305T120000
DTEND;TZID=Australia/Sydney:20260305T123000
DTSTAMP:20260528T051236
CREATED:20260303T012603Z
LAST-MODIFIED:20260303T012603Z
UID:17865-1772712000-1772713800@www.atnf.csiro.au
SUMMARY:Colearnium: Phil Edwards (CSIRO)
DESCRIPTION:What was the ATCA built for (and what has it actually done)?\n\nThis week Phil Edwards will tell us “What was the ATCA built for (and what has it actually done)?“. \n\n \n\n \n\n\n\nPlease let me know if you’re willing to present at a future co-learnium or have requests for specific talks\, thanks! \n\nKind regards\, \n\nStefan Duchesne \n\nTeams meeting link below: \nTeams Meeting\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/colearnium-phil-edwards-csiro-2/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
END:VEVENT
END:VCALENDAR