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DTSTART;TZID=Australia/Perth:20260506T120000
DTEND;TZID=Australia/Perth:20260506T130000
DTSTAMP:20260613T200115
CREATED:20260430T030155Z
LAST-MODIFIED:20260430T030300Z
UID:18796-1778068800-1778072400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Prof Yihua Yan (National Astronomical Observatories\, Chinese Academy of Sciences)
DESCRIPTION:Overview on Chinese Meridian Project – Solar and Heliospheric Radio Studies at Mingantu Observing Station\n\nAbstract: \n\nThe Chinese Meridian Project (CMP) is a Ground‐based Space Environment Monitoring Network which includes the Space Environment Monitoring System. The system adopts a well‐designed monitoring architecture\, known as “One Chain\, Three Networks\, and Four Focuses” to achieve stereoscopic and comprehensive monitoring of the entire solar-terrestrial space. The “One‐Chain” component utilizes optical\, radio\, interplanetary scintillation\, and cosmic ray instruments to cover the causal chain of space weather disturbances from the solar surface to near‐Earth space. For the ionosphere\, middle and upper atmosphere\, and geo-magnetic field\, instruments are deployed along longitudes of 120o and 100oE\, and latitudes of 30o and 40oN\, forming the “Three Networks”. Furthermore\, more powerful monitoring facilities or large‐scale instruments have been deployed in four key regions: the high-latitude polar region\, mid‐latitude region in northern China\, low‐latitude region at Hainan Island\, and the Tibet region. These four regions are crucial for disturbances propagation and evolution\, or possess unique geographical and topographical characteristics. \n\nThe Mingantu Observing Station\, which is located about 400km northwest of Beijing with the wide‐band spectral radioheliographs and the interplanetary scintillation telescopes\, constitutes a key component of CMP for tracking and monitoring solar eruptions from the Sun’s atmosphere into interplanetary space. Here we give an overview on CMP and introduce the progress on solar and heliospheric radio studies at Mingantu Observing Station. \n\nPlease note that the event timezone is AWST (UTC+8 hrs) \n\nLocation\n\nOrganiser\n\n\n \n\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-prof-yihua-yan-national-astronomical-observatories-chinese-academy-of-sciences/
LOCATION:CSIRO – Kensington\, Australian Resources Research Centre (ARRC)\, 26 Dick Perry Ave\, Kensington\, WA\, 6101\, Australia
CATEGORIES:Colloquia
ATTACH;FMTTYPE=image/jpeg:https://www.atnf.csiro.au/wp-content/uploads/2026/04/yihua_yan.jpeg
ORGANIZER;CN="Gemma Anderson":MAILTO:gemma.anderson@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Sydney:20260513T150000
DTEND;TZID=Australia/Sydney:20260513T160000
DTSTAMP:20260613T200115
CREATED:20260503T233334Z
LAST-MODIFIED:20260507T002040Z
UID:18802-1778684400-1778688000@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Georgios Paraschos (University of Turku)
DESCRIPTION:Shocks\, polarisation\, and high-energy emission: Probing black hole jets from VLBI to IXPE\n\nAbstract: \n\nRelativistic jets launched by accreting supermassive black holes are fundamental drivers of feedback in galaxies\, yet the location and mechanisms responsible for high- energy γ-ray emission remain uncertain. I will present recent multimessenger studies combining VLBI imaging\, IXPE X-ray and optical polarimetry\, γ-ray monitoring\, and neutrino observations of blazars undergoing major flaring events. These coordinated campaigns reveal shock–shock interactions in the parsec-scale jet\, conditions favourable for hadronic emission\, and γ-ray production occurring well downstream of the central engine. I will discuss these results in the context of our broader efforts with the Event Horizon Telescope to directly probe the physical conditions governing jet formation and high-energy radiation near supermassive black holes. Finally\, I will touch upon the collaborative work planned with colleagues at the ATNF. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-georgios-paraschos-university-of-turku/
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/2026/05/BU_ALL_Paraschos-scaled.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
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DTSTART;TZID=Australia/Sydney:20260520T150000
DTEND;TZID=Australia/Sydney:20260520T160000
DTSTAMP:20260613T200115
CREATED:20260507T234254Z
LAST-MODIFIED:20260507T234255Z
UID:18832-1779289200-1779292800@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Xiaohui Sun (Yunnan University)
DESCRIPTION:Study of Galactic multi-scale magnetic field with radio polarization observation\n\nAbstract: \n\nRadio polarization observation provides an important way to study Galactic magnetic field from small to large scales. All-sky polarization surveys with broad frequency coverage are well suited for the study. In this talk\, I present recent studies on supernova remnants and pulsar wind nebulae from ASKAP and ATCA observations. I will then present the results from the STAPS survey conducted with Murriyang and ongoing FAST observations. To the low frequency end\, the polarization images from MWA reveal large-scale structures likely originated from local interstellar medium. I will conclude the talk with a perspective with future SKA. \nJoin Event on Microsoft Teams\nLocation\n\nOrganiser\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-xiaohui-sun-yunnan-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/2026/05/pi_mwa_gal_zea_2.png
ORGANIZER;CN="Jishnu Thekkeppattu":MAILTO:Jishnunambissan.Thekkeppattu@csiro.au
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Australia/Perth:20260527T130000
DTEND;TZID=Australia/Perth:20260527T140000
DTSTAMP:20260613T200115
CREATED:20260526T075305Z
LAST-MODIFIED:20260527T021904Z
UID:19039-1779886800-1779890400@www.atnf.csiro.au
SUMMARY:S&A Colloquium: Lindsey Oberhelman (ANU)
DESCRIPTION:The turbulent magnetic Milky Way\, deriving a turbulent field scale height from POSSUM data\n\nAbstract: \n\nUsing broadband polarimetric observations from the ASKAP POSSUM survey\, I investigate the turbulent magnetised interstellar medium of the Milky Way through Faraday complexity in more than 37\,000 polarised extragalactic radio sources. By applying QU-fitting to the Stokes Q and U spectra\, I measure Faraday broadening\, which traces fluctuations in the line-of-sight magnetic field and thermal electron density. I examine the Galactic latitude dependence of turbulence and interpret the results using the exponential disk model. The results also suggest a possible north–south asymmetry in the turbulent foreground\, potentially linked to Galactic structure\, spiral arms\, warp\, or the Magellanic system. I discuss the role of turbulence correlation length assumptions\, comparisons with pulsar scintillation and RM structure-function studies\, and ongoing work using RM structure functions to constrain the physical scales of turbulence probed by POSSUM.  \n\nPlease note that the event timezone is AWST (UTC+8 hrs) \n\nLocation\n\nOrganiser\n\n\n \n\n\nEvent details\nDownload iCal\nCategory\nColloquia
URL:https://www.atnf.csiro.au/event/sa-colloquium-lindsey-oberhelman-anu/
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/2026/05/Colloq-27052026.png
ORGANIZER;CN="Gemma Anderson":MAILTO:gemma.anderson@csiro.au
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