{
  "bibcode": "2019GCN.26290....1G",
  "body": "S. Garrappa (DESY-Zeuthen) and S. Buson (Univ. of Wuerzburg) on behalf \nof the Fermi-LAT collaboration:\n\nWe report an analysis of observations of the vicinity of the high-energy \nIC191122A neutrino event (GCN 26276) with all-sky survey data from the \nLarge Area Telescope (LAT), on board the Fermi Gamma-ray Space \nTelescope. The IceCube event was detected on 2019-11-22 22:45:10.50 UT \n(T0) with J2000 position RA = 27.25 (+1.70, -2.90) deg, Decl. = -0.04 \n(+1.17, -1.49) deg 90% PSF containment. No cataloged >100 MeV gamma-ray \nsources are located within the 90% IC191122A localization error.\n\nWe searched for the existence of intermediate (months to years) \ntimescale emission from a new gamma-ray transient source. Preliminary \nanalysis indicates no significant (>5sigma) new excess emission (> 100 \nMeV) within the IC191122A 90% confidence localization. Assuming a \npower-law spectrum (photon index = 2.0 fixed) for a point source at the \nIceCube best-fit position, the >100 MeV flux upper limit (95% \nconfidence) is < 1.5e-10 ph cm^-2 s^-1 for ~11-years (2008-08-04 / \n2019-11-22 UTC), < 8.4e-9 (< 1.5e-7) ph cm^-2 s^-1 for a 1-month (1-day) \nintegration time before T0.\n\nSince Fermi normally operates in an all-sky scanning mode, regular \nmonitoring of this source will continue. For this source the Fermi-LAT \ncontact person are S. Garrappa (simone.garrappa atdesy.de \n<http://desy.de/>) and S. Buson (sara.buson atuni-wuerzburg.de \n<http://uni-wuerzburg.de/>). The Fermi LAT is a pair conversion \ntelescope designed to cover the energy band from 20 MeV to greater than \n300 GeV. It is the product of an international collaboration between \nNASA and DOE in the U.S. and many scientific institutions across France, \nItaly, Japan and Sweden.",
  "circularId": 26290,
  "createdOn": 1574605035000,
  "email": "simone.garrappa@desy.de",
  "subject": "Fermi-LAT Gamma-ray Observations of IceCube-191122A",
  "submitter": "Simone Garrappa at DESY  <simone.garrappa@desy.de>",
  "eventId": "IceCube-191122A"
}