Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 30542

Subject
GRB 210726A: 6 GHz VLA radio upper limit
Date
2021-07-28T22:38:02Z (3 years ago)
From
Genevieve Schroeder at Northwestern University <genevieveschroeder2023@u.northwestern.edu>
G. Schroeder, W. Fong, A. Rouco Escorial, (Northwestern), T. Laskar (U. of
Bath), E. Berger (Harvard) report:

"We observed the position of short GRB 210726A (Bernardini et al., GCN
30523; Veres et al., GCN 30540; Palmer et al., GCN 30536; Tohuvavohu et
al., GCN 30535) with the Karl G. Jansky Very Large Array (VLA) under
program 20B-057 (PI: Fong) beginning on 2021 July 27.81 UT (1.00 days
post-burst) at a mean frequency of 6 GHz.

Based on preliminary analysis, in 1 hour of observations we do not detect
any radio emission at or near the position of the XRT afterglow (Osborne et
al., GCN 30524) to a 3-sigma limit of 15 microJy. Additional, detailed
analysis is ongoing.

We thank the VLA staff for quickly approving and executing these
observations."
Looking for U.S. government information and services? Visit USA.gov