Speaker for May GM

7th May 2022
By Bob Fuller
Our speaker for the 17 May GM is Peter MacGregor from Western Sydney University, who will present an update on Odd Radio Circles (ORCs). In 2019, astronomers discovered several diffuse filled rings of radio emission in the ASKAP-EMU pilot survey. Dubbed “Odd Radio Circles”, or ORCs, these objects have not been seen before in radio observations, are not artefacts, and do not seem to correspond to any current known type of object or imaging artefact.

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