{
  "bibcode": "2015GCN.18235....1F",
  "body": "W. Fong (U. Arizona) and B. A. Zauderer (Harvard) report:\n\n\"We observed the field of the short-duration GRB 150831A (Lien et al., GCN\n18209) with the Karl G. Jansky Very Large Array (VLA) beginning on 2015 Aug\n31.934 UT (11.9 hr post-burst) at a mean frequency of 9.8 GHz. In 1 hour of\nobservations, we do not detect any radio source within or around the\nenhanced XRT position (Osborne et al., GCN 18212) to a 3-sigma limit of 25\nmicroJy. Furthermore, we obtained a second set of observations beginning on\n2015 Sep 2.954 UT (2.5 days post-burst) at a mean frequency of 9.8 GHz and\ndo not detect any radio source in or around the XRT position to a 3-sigma\nlimit of 21 microJy.\n\nWe therefore place 3-sigma limits of 25 microJy and 21 microJy on the radio\nafterglow of GRB 150831A at 11.9 hr and 2.5 days after the burst,\nrespectively.\n\nWe thank the VLA staff for quickly executing these observations.\"",
  "circularId": 18235,
  "createdOn": 1441325783000,
  "email": "wfong@email.arizona.edu",
  "subject": "GRB 150831A: 9.8 GHz VLA upper limits",
  "submitter": "Wen-fai Fong at U of Arizona  <wfong@email.arizona.edu>",
  "eventId": "GRB 150831A"
}