GRB 230622A: ATCA rapid radio follow-up
Abstract
The Australia Telescope Compact Array (ATCA) rapidly performed radio observations of the long GRB 230622A (Melandri et al. GCN 34058) at 5.5 and 9 GHz as part of the Large ATCA "PanRadio GRB" follow-up programme C3542 (PI. Anderson). ATCA was on target observing at 11:30 UT, just 1.5 hrs post-burst and observed for 10 hrs. Only 4 of the usual 6 antennas were available. Due to poor observing conditions, only ~6 hrs of data at each frequency were imaged. There is no radio source coincident with the enhanced XRT position (Evans et al. GCN 34069) with a 3 sigma upper limit of 54 and 48 microJy/beam at 5.5 and 9.0 GHz, respectively. Further observations are planned. We thank the CSIRO Space and Astronomy staff for supporting these observations and maintaining the ATCA rapid-response observing mode. 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.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- June 2023
- Bibcode:
- 2023GCN.34070....1A