General Meeting: November 2022

ASSA monthly meetings are held in-person and are open to the general public.

Attend In-Person: Click here for Tickets. Theatre tickets are only required if you wish to attend this meeting in-person. Tickets are FREE and can be obtained online via Eventbrite. Please cancel your tickets if you are unable to attend in-person.

Finding the Venue: The Braggs LT entrance faces the Barr Smith Lawns and is located at E10 on the map.

Watch Live Online: (no ticket required): YouTube or FacebookPlease Subscribe to the ASSA YouTube channel and turn ON Notifications to be instantly notified of our live broadcasts.

Meeting Agenda:

  • Public Lecture: Odd Radio Circles: Giant Explosions in Distant Galaxies by Prof. Ray Norris
  • The Sky this Month: Highlights
    • Total Lunar Eclipse
    • Taurid Meteor Shower
  • Announcements & Upcoming Events
  • Close at 9:30pm

Odd Radio Circles: Giant Explosions in Distant Galaxies

Speaker: Prof. Ray Norris, CSIRO Space & Astronomy, and Western Sydney University

Abstract: Abstract: In 2019, within days of getting the first full-quality images from CSIRO's new ASKAP radio telescope in Western Australia, we discovered faint circles of radio emission which were unlike anything seen before. We had no idea what they were, and some people even doubted whether they were real. Three years on, and we've studied them with other telescopes, notably the South African Meerkat telescope, which has given us deep images showing structure that we couldn’t see with ASKAP, and also measurements of their magnetic field. We are now pretty certain that most of them are giant bubbles about a million light years across, driven by shockwaves from a gigantic explosion in the central galaxy. They are so large that they have engulfed nearby galaxies, But what caused the explosions? That is what we are now trying to figure out.

More Info:

Bio: Ray Norris is a Research Professor at Western Sydney University and an Emeritus Fellow at CSIRO Space & Astronomy, who researches how galaxies formed and evolved after the Big Bang, and also researches the astronomy of Aboriginal Australians. He featured in the stage show "The First Astronomers" with Wardaman elder Bill Yidumduma Harney, and has written the novel "Graven Images". He was educated at Cambridge University, and University of Manchester, UK, and moved to Australia to join CSIRO, where he became Head of Astrophysics, and then Deputy Director of the Australia Telescope, and Director of the Australian Astronomy Major National Research Facility, before returning in 2005 to active research. He initiated an international project (EMU, or Evolutionary Map of the Universe) to understand the origin and evolution of galaxies, using the new ASKAP radio-telescope in Western Australia, and led the team within EMU that discovered the mysterious ORCs (or Odd Radio Circled) that are still unexplained. He also studies the astronomy of Indigenous Australians, and is fascinated by their many intellectual achievements as they sought to understand their Universe.

More Info:

#science #astronomy #space #Adelaide #southaustralia

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Event info

Wednesday 02 Nov 2022

8:00 PM - 9:30 PM

The Braggs Lecture Theatre (University of Adelaide) and Online

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