{
  "bibcode": "2019GCN.25296....1L",
  "body": "The LIGO Scientific Collaboration and the Virgo Collaboration report:\n\n\nWe identified the compact binary merger candidate S190808ae during\nreal-time processing of data from LIGO Hanford Observatory (H1), LIGO\nLivingston Observatory (L1), and Virgo Observatory (V1) at 2019-08-08\n22:21:21.496 UTC (GPS time: 1249338099.496). The candidate was found\nby the GstLAL [1] analysis pipeline.\n\nS190808ae is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 3.4e-08 Hz, or about one in 11\nmonths. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S190808ae\n\nThe classification of the GW signal, in order of descending\nprobability, is Terrestrial (57%), BNS (43%), BBH (<1%), MassGap\n(<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, there is strong\nevidence for the lighter compact object having a mass < 3 solar masses\n(HasNS: >99%). Using the masses and spins inferred from the signal,\nthere is strong evidence for matter outside the final compact object\n(HasRemnant: >99%).\n\nOne sky map is available at this time and can be retrieved from the\nGraceDB event page:\n ��* bayestar.fits.gz, an updated localization generated by BAYESTAR\n[2], distributed via GCN notice about 6 minutes after the candidate\n\nFor the bayestar.fits.gz sky map, the 90% credible region is 5365\ndeg2. Marginalized over the whole sky, the a posteriori luminosity\ndistance estimate is 208 +/- 77 Mpc (a posteriori mean +/- standard\ndeviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n ��[1] Messick et al. PRD 95, 042001 (2017)\n ��[2] Singer & Price PRD 93, 024013 (2016)",
  "circularId": 25296,
  "createdOn": 1565306303000,
  "email": "deep@uwm.edu",
  "subject": "LIGO/Virgo S190808ae: Identification of a GW compact binary merger candidate",
  "submitter": "Deep Chatterjee at University of Wisconsin, Milwaukee  <deep@uwm.edu>",
  "eventId": "LIGO/Virgo S190808ae"
}