{
  "bibcode": "2015GCN.17804....1F",
  "body": "W. Fong (Univ. of Arizona) reports:\n\n\"We observed the position of the short-duration GRB 150424A (Beardmore et\nal., GCN 17743) with the Karl G. Jansky Very Large Array (VLA) beginning on\n2015 Apr 25.073 UT (18.02 hr post-burst) at a mean frequency of 9.8 GHz. In\n1 hour of observations, we detect a faint radio source at the position:\n\nRA(J2000) = 10:09:13.37\nDec(J2000) = -26:37:51.49\n\nwith an uncertainty of 0.5\" in each coordinate. This position is coincident\nwith the position of the X-ray afterglow (Goad et al., GCN 17749) as well\nas the position of the optical afterglow (Perley and McConnell., GCN 17745;\nMalesani et al., GCN 17756; Kann et al., GCN 17757; Butler et al., GCN\n17762).\n\nWe measure a 9.8 GHz flux density of ~31 microJy. To assess the nature of\nthis radio source, we obtained two additional sets of VLA observations\nstarting at 4.67 and 7.88 days after the burst. The source is no longer\ndetected in each of these observations, as well as a deep, combined image,\nto 3-sigma limits of 29 microJy and 20 microJy, respectively.\n\nDue to the fading of the radio source, as well as the positional\ncoincidence with the X-ray and optical afterglows, we consider this source\nto be the radio afterglow of GRB 150424A.\n\nWe thank the VLA staff for quickly executing these observations.\"",
  "circularId": 17804,
  "createdOn": 1431018232000,
  "email": "wfong@email.arizona.edu",
  "subject": "GRB 150424A: 9.8 GHz VLA detection",
  "submitter": "Wen-fai Fong at U of Arizona  <wfong@email.arizona.edu>",
  "eventId": "GRB 150424A"
}