TITLE: GCN CIRCULAR NUMBER: 41060 SUBJECT: GRB 250704B / EP250704a: 1.3 GHz MeerKAT Detection DATE: 25/07/10 20:58:22 GMT FROM: Genevieve Schroeder at Cornell University genevieveschroeder@u.northwestern.edu

G. Schroeder (Cornell), L. Rhodes (TSI/McGill), W. Fong (Northwestern), T. Laskar (Utah), E. Berger (Harvard) report:

We observed the location of the short-duration GRB 250704B/EP 250704A (Wang et al., GCN 40940; Li et al., GCNs 40941, 40956, Frederiks et al., GCN 40972; Wang et al., GCN 40978; Shimizu et al., GCN 41025) with the MeerKAT radio telescope under program MKT-24032 (PI Schroeder) at a central frequency of 1.3 GHz for a total of 2 hours with a mid time of 2025 July 10 at 00:07 UT (5.7 days post burst).

In preliminary analysis, we detect the radio afterglow (Schroeder et al., GCN 41038; Ricci et al., GCN 41046), and measure a flux density of ~70 microJy. Further observations are planned.

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

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