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DTSTART;TZID=Australia/Sydney:20260723T120000
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UID:19536-1784808000-1784809800@www.atnf.csiro.au
SUMMARY:Colearnium: Karen Lee-Waddell (UWA/CSIRO)
DESCRIPTION:Economics 101: how issues with the global oil supply can lead to stagflation\n\nThis week Karen Lee-Waddell will tell us about “Economics 101: how issues with the global oil supply can lead to stagflation“. \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-karen-lee-waddell-uwa-csiro/
LOCATION:WA
CATEGORIES:Colearnia
ORGANIZER;CN="Stefan Duchesne":MAILTO:Stefan.Duchesne@csiro.au
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DTSTART;TZID=Australia/Sydney:20260728T150000
DTEND;TZID=Australia/Sydney:20260728T160000
DTSTAMP:20260723T001941Z
CREATED:20260722T020906Z
LAST-MODIFIED:20260723T001941Z
UID:19542-1785250800-1785254400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Anna Ho (Cornell University)
DESCRIPTION:Relativistic Stellar Explosions: The Landscape Revealed by Wide-field\, High-cadence Optical Surveys\n\nAbstract: \n\n For the last half-century\, relativistic outflows accompanying the final collapse of massive stars have predominantly been detected via high-energy emission\, as long-duration gamma-ray bursts (GRBs). However\, it has long been hypothesized that GRBs are the extreme of a continuum of phenomena\, including dirty fireballs and off-axis jets. I will show that the large grasp of optical surveys has recently made it possible to test this hypothesis by probing the phase space of fast and rare transients\, with targeted radio observations playing a crucial role in confirming the presence of relativistic ejecta. I will review the emerging zoo\, which includes orphan afterglows at cosmological distances\, radio-bright supernovae in the local universe\, and unexpected new classes of transients that are prime targets for millimeter-band observations. An understanding of the origin of these events and their relation to GRBs will be enabled by upcoming time-domain surveys in other bands\, such as X-ray and UV. \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-anna-ho-cornell/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
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DTSTART;TZID=Australia/Sydney:20260729T150000
DTEND;TZID=Australia/Sydney:20260729T160000
DTSTAMP:20260722T020850Z
CREATED:20260722T020849Z
LAST-MODIFIED:20260722T020850Z
UID:19541-1785337200-1785340800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Harshda Saxena (Caltech)
DESCRIPTION:A Multi-Wavelength Study of Cluster Cosmology and Astrophysics\n\nAbstract: \n\nGalaxy clusters are powerful probes of both cosmology and astrophysics\, tracing the growth of large-scale structure while providing a laboratory for studying the physics of the intracluster medium (ICM) and Active Galactic Nuclei (AGN). In this talk\, I will present my thesis work which uses multi-wavelength observations and simulations to characterize key astrophysics that affect cluster-based cosmological measurements. I will discuss how millimeter emission from cluster-member AGNs contaminates Sunyaev-Zel’dovich (SZ) cluster surveys\, including our recovery of two clusters in ACT maps using CARMA data. Building on this work\, I will present our plans for ongoing ATCA observations of millimeter-bright AGNs in the SPT-Deep field\, which will provide the first constraints on AGN-induced biases in a complete SZ-selected cluster sample. I will also discuss our previous work to quantify the impact of another astrophysical systematic\, cluster triaxiality\, on SZ selection\, which further leads to biases in weak-lensing mass estimates. To quantify the effect of this triaxiality\, our collaboration is developing a multi-probe framework that combines X-ray\, SZ\, and weak-lensing observations of clusters to constrain cluster geometry\, improve mass measurements\, and probe dark matter physics and mass accretion histories. In addition\, I will discuss ongoing work on cluster scaling relations using both observations and simulations\, with the goals of identifying low-scatter mass proxies and quantifying correlations between cluster observables. Finally\, I will present our work characterizing non-thermal pressure support in the ICM of clusters through combined SZ and X-ray fluctuation measurements\, representing the first such analysis using eROSITA and SZ data. \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-harshda-saxena-caltech/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
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DTSTART;TZID=Australia/Sydney:20260812T150000
DTEND;TZID=Australia/Sydney:20260812T160000
DTSTAMP:20260722T021023Z
CREATED:20260722T021022Z
LAST-MODIFIED:20260722T021023Z
UID:19545-1786546800-1786550400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Daniel Reardon (Swinburne University)
DESCRIPTION:TBD\n\nAbstract: \n\nTBD \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-daniel-reardon-swinburne-university/
LOCATION:Marsfield Lecture Theatre\, 26 Pembroke Road\, Marsfield\, NSW\, 2122\, Australia
CATEGORIES:Colloquia
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
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