{
  "bibcode": "2017GCN.21680....1C",
  "body": "T. Callister (Caltech), J. Dowell (U New Mexico), J. Kanner (Caltech),\nM. Kavic (LIU Brooklyn), C. League (LIU Brooklyn), P. Shawhan (U\nMaryland), J. Simonetti (Virginia Tech), G. Taylor (U New Mexico), J.\nTsai, C. Yancey (U Maryland)\n\nThe Long Wavelength Array (LWA1, located west of Socorro, New Mexico)\n[S.W. Ellingson, et al. http://lanl.arxiv.org/abs/1204.4816] made\nobservations on June 17 following the LIGO trigger G298048. The first\nobservation began at 2017-08-17 13:09:51 UTC (28 minutes after the\ntrigger) and ran for approximately 1.1 hours.\n\nAll observations were centered at frequencies 25.85 MHz and 45.45 MHz,\neach with a bandwidth of 19.6 MHz. The FWHM is 15.499 degrees at 25.85\nMHz, and 6.648 degrees at 45.45 MHz.\n\nThe beam centers for the first observation were: Beam 1: RA 2.391h, Dec\n41.810deg; Beam 2: RA 2.431h, Dec 46.572deg; Beam 3: RA 2.803h, Dec\n44.202deg; and Beam 4: RA 2.660h, Dec 50.480deg. These were chosen to\nobserve the maximum of the LIGO skymap available with the initial\nnotice.\n\nThe next observation, using an updated skymap, began at 2017-08-17\n19:15:00 UTC (6.6 hours after the trigger) and ran for 4 hours.\n\nThe beam centers for the second observation were Beam 1: RA 12.814h, Dec\n-13.862deg; Beam 2: RA 12.955h, Dec -17.896deg; Beam 3: RA 13.096h, Dec\n-22.024deg; and Beam 4: RA 11.786h, Dec -39.840deg. These coordinates\ninclude the position of the observed transient, as reported by D.A.\nCoulter, et al., [GCN 21529], as well as nearby regions.\n\nWe plan to continue follow-up observations at the second set of\ncoordinates over the next few weeks. Data analysis is proceeding.",
  "circularId": 21680,
  "createdOn": 1503590897000,
  "email": "cleague@gmail.com",
  "subject": "LIGO/Virgo G298048: LWA radio observations",
  "submitter": "Christopher League at FRBSG  <cleague@gmail.com>",
  "eventId": "LIGO/Virgo G298048"
}