{
  "bibcode": "2017GCN.20707....1O",
  "body": "Nicola Omodei (Stanford), Giacomo Vianello (Stanford),  Daniel Kocevski \n(NASA/MSFC) and Sara Buson (GSFC) report on behalf of the Fermi-LAT team:\n\nWe have searched data collected by the Fermi Large Area Telescope (LAT) \nfor possible high-energy (E > 100 MeV) gamma-ray emission in \nspatial/temporal coincidence with the LIGO/Virgo trigger G274296.\nThe region of the LIGO map with probability >90% entered the LAT field \nof view at T0+400 (T0 = 2017-02-17 06:05:53 UTC), and reached full \ncoverage at about 7ks from T0.\nWe searched for a transient counterpart within the LIGO 90% probability \ncontour in the time window from T0  to T0 + 10 ks and found no \nsignificant new sources.\nWe also performed a search that adapted the time interval of the \nanalysis to the exposure of each region of the sky. No significant \ncandidate counterpart was found.\n\nThe Fermi-LAT is a pair conversion telescope designed to cover the \nenergy band from 20 MeV to greater than 300 GeV. It is the product of an \ninternational collaboration between NASA and DOE in the U.S. and many \nscientific institutions across France, Italy, Japan and Sweden.",
  "circularId": 20707,
  "createdOn": 1487540238000,
  "email": "nicola.omodei@stanford.edu",
  "subject": "LIGO/Virgo G274296: Fermi-LAT search for a high-energy gamma-ray counterpart",
  "submitter": "Nicola Omodei at Stanford U  <nicola.omodei@stanford.edu>",
  "eventId": "LIGO/Virgo G274296"
}