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GCN Circular 19606

GRB 160625B: VLA Detection
2016-06-27T20:43:24Z (8 years ago)
Kate Alexander at Harvard <>
K. D. Alexander (Harvard), T. Laskar (NRAO / UC Berkeley), W. Fong
(University of Arizona) and E. Berger (Harvard) report on behalf of a
larger collaboration:

We observed the Fermi/LAT GRB 160625B (Diririsa et al., GCN 19580) at
multiple frequencies with the Karl G. Jansky Very Large Array (VLA)
beginning 2016 June 27.28 UT (1.34 days after the burst). At a mean
frequency of 9.8 GHz, we detect a radio source with a preliminary flux
density of ~400 uJy at

RA (J2000) = 20:34:23.507 +/- 0.003
Dec (J2000) = +06:55:07.89 +/- 0.03

consistent with the position of the optical afterglow (Troja et al., GCN
19588; Oates et al., GCN 19589) and the Swift/XRT position (Melandri et
al., GCN 19585). Follow-up observations are planned.

We thank the VLA staff for rapidly executing these observations.
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