{
  "bibcode": "2017GCN.21670....1L",
  "body": "C. Lynch (University of Sydney), T. Murphy (University of Sydney),\nD. Kaplan (UWM), K. Bannister (CSIRO), D. Dobie (University of Sydney)\non behalf of the VAST collaboration.\n\nFollowing Bannister et. al. (LVC GCN 21559) and Kaplan et al. (LVC GCN\n21574),\nwe observed a second epoch of NGC 4993 with the Australia Telescope Compact\nArray at 8.5 and 10.5 GHz. Observations started at 2017-08-20 23:31:02.9 UT\nand ended at 2017-08-21 11:20:00 UT with approximately 13 minutes of\non-source\ntime.\n\nWe fit and subtracted a point-source at the optical position of NGC 4993\n(13:09:47.71, -23:23:01.79; Skrutskie et al. 2003, 2MASS Extended Source\nCatalog).\nFrom this we set a 3-sigma upper limit of 135 uJy and 99 uJy on radio\nemission\nfrom SSS17a at 8.5 and 10.5 GHz respectively.\n\nSubsequent epochs are planned.\n\nThank you to CSIRO staff for supporting these observations.",
  "circularId": 21670,
  "createdOn": 1503549005000,
  "email": "tara.murphy@sydney.edu.au",
  "subject": "LIGO/Virgo G298048: ATCA follow-up of SSS17a in NGC 4993",
  "submitter": "Tara Murphy at U of Sydney  <tara.murphy@sydney.edu.au>",
  "eventId": "LIGO/Virgo G298048"
}