TITLE:   GCN CIRCULAR
NUMBER:  40546
SUBJECT: GRB 250520A: 3 GHz MeerKAT Detection
DATE:    25/05/24 00:23:36 GMT
FROM:    Genevieve Schroeder at Cornell University <genevieveschroeder@u.northwestern.edu>

G. Schroeder (Cornell), L. Rhodes (TSI/McGill), W. Fong (Northwestern), A. J. Levan (Radboud and Warwick) report:

We observed the location of the short-duration GRB 250520A (Eyles-Ferris et al., GCN 40491; SVOM/GRM Team, GCN 40495; Tembhurnikar et al., GCN 40497; Frederiks et al., GCN 40512; Asaoka et al., GCN 40519; Dafcikova et al., GCN 40540) with the MeerKAT radio telescope at 3.1 GHz for a total of 2 hours at a mid time of 2025 May 23 at 03:50 UT (3.05 days post burst). 

In preliminary analysis, we detect a ~3.4-sigma radio source with a flux density of ~18 microJy consistent with the position of the 10 GHz radio afterglow (Schroeder et al., GCN 40518; GCN 40545) and also with the X-ray afterglow (Goad et al., GCN 40494). Further observations are planned.

We thank the staff at the South African Radio Astronomy Observatory for scheduling these observations.