{
"subject": "LIGO/Virgo G277583: Identification of a GW Burst Candidate",
"bibcode": "2017GCN.20860....1L",
"createdOn": 1489450305000,
"circularId": 20860,
"submitter": "Min-A Cho at UMD ",
"email": "min-a.cho@ligo.org",
"body": "The LIGO Scientific Collaboration and Virgo report:\n\nThe CWB Burst analysis identified candidate G277583 during real-time\nprocessing of data from LIGO Hanford Observatory (H1) and LIGO\nLivingston Observatory (L1) at 2017-03-13 22:40:09.593 UTC (GPS time:\n1173480027.593).\n\nG277583 is an event of interest because its false alarm rate, as\ndetermined by the online analysis, is 8.4e-08 Hz or about one in 4\nmonths. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/events/G277583\n\nTwo sky maps are available at this time and can be retrieved from\nthe GraceDB event page:\n *skyprobcc_cWB.fits, an initial localization generated by cWB,\n included in the original GCN notice.\n *cWB_plus_LIB.fits.gz, a pixel-by-pixel arithmetic mean of the\n cWB and LIB sky maps. Since neither cWB nor LIB is favored\n over the other, this mean sky map is the preferred sky map at\n this time. The 50% confidence interval covers 2130 squares\n degrees and the 90% confidence interval covers 12140 square\n degrees.\n\nUpdates on our analysis of this event will be sent as they become\navailable."
}