TITLE: GCN CIRCULAR NUMBER: 38999 SUBJECT: ATCA detection of possible radio counterpart to GRB 250114A DATE: 25/01/20 14:14:16 GMT FROM: lauren.rhodes@mcgill.ca
L. Rhodes (TSI/McGill), G. E. Anderson (Curtin), A. J. van der Horst (GWU), J. K. Leung (UofT/HUJI), A. Gulati (USyd), S. Chastain (UNM) on behalf of the PanRadio GRB collaboration
We observed the position of GRB 250114A (Klingler et al., GCN 38927) starting at 2025-01-16 15:53UT for 7.5 hours with the Australia Telescope Compact Array (ATCA), as part of the “PanRadio GRB” Large ATCA follow-up programme C3542 (PI. Anderson).
We detect a radio source at the reported position (Klingler et al., GCN 38927) of the afterglow with a preliminary flux density of 70uJy/beam. The rms noise in our observation is 13 uJy/beam at 7GHz.
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 (https://ror.org/05qajvd42) which is funded by the Australian Government for operation as a National Facility managed by CSIRO.
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