Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 6549

GRB 070612A: Possible WSRT Radio Detection
2007-06-17T10:46:54Z (17 years ago)
Alexander van der Horst at U of Amsterdam <>
A.J. van der Horst, R.A.M.J. Wijers, K. Wiersema (University of Amsterdam),
and E. Rol (University of Leicester) report on behalf of a larger

"We observed the position of the GRB 070612A afterglow (GCN 6509) at 4.9 GHz
with the Westerbork Synthesis Radio Telescope at June 15 8.10 UT to 20.09 UT,
i.e. 3.23 - 3.73 days after the burst.
We tentatively detect a radio source at 3 sigma significance, located at the
position of the optical counterpart (GCN 6515, GCN 6525), with a flux of
78 +/- 25 microJy.
Further observations at radio wavelengths of this afterglow are planned and
encouraged, especially given the suggested association with a nearby
low-redshift host galaxy (GCN 6525).

We would like to thank the WSRT staff for scheduling and obtaining these
Looking for U.S. government information and services? Visit