Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 35097

GRB 231117A: ATCA detection of a radio counterpart
2023-11-18T10:44:18Z (6 months ago)
Lauren Rhodes at Oxford <>
L. Rhodes (Oxford), G. E. Anderson (Curtin), A. J. van der Horst (GWU),J. K. Leung (UofT/HUJI), S. D. Ryder (Macquarie),  A. Gulati (USyd), S. Chastain (UNM) on behalf of the PanRadio GRB collaboration

The Australia Telescope Compact Array (ATCA) observed short GRB 231117A (Laha et al., GCN 35071) as part of the Large ATCA "PanRadio GRB" follow-up programme C3542 (PI. Anderson) starting at 2023-11-17 04:00UT for 11hours.

We detect a radio source with a flux density of ~210uJy/beam at 9GHz at coordinates consistent with both those given by the XRT and the Lulin Observatory (A.P. Beardmore et al., GCN 35074; S. Yang et al., GCN 35083).

Further observations are planned.

We thank the CSIRO Space and Astronomy staff for supporting these observations.

We acknowledge the Gomeroi people as the traditional owners of the Observatory site. The Australia Telescope Compact Array is part of the Australia Telescope National Facility ( which is funded by the Australian Government for operation as a National Facility managed by CSIRO.

Looking for U.S. government information and services? Visit