{
  "bibcode": "2016GCN.20253....1K",
  "body": "Y. Kawakubo, A. Yoshida, T. Sakamoto, M. Moriyama, Y. Yamada (AGU),\nK. Yamaoka (Nagoya U), S. Nakahira (JAXA), I. Takahashi (IPMU),\nY. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U),\nW. Ishizaki (ICRR), M. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena)\nand the CALET collaboration:\n\nWe have performed a search for an X-ray and a gamma-ray counterpart\nusing the CALET Gamma-ray Burst Monitor (CGBM) data around the on-set\nof the very-high-energy neutrino candidate IceCube-161210\n(Blaufuss, GCN Circ. 20247).  The position of the IceCube event at the\nevent time was inside the field of view of HXM (the incident angle\nwas 48 deg) and SGM (the incident angle was 51 deg).\n\nNo CGBM on-board trigger happened around the IceCube event time.  By using\nthe CGBM time-history data (0.125 s time resolution), we found no significant\nsignal between +-30 s from the IceCube event time.  We estimate 7-sigma upper\nlimit of SGM in the 50-1000 keV band as 5.6 x 10^-7 erg cm^-2 s^-1 assuming a\nsingle power-law model with a photon index of -2 in 1 s exposure.\n\nAll the quoted values are preliminary and subject to change by a further\nanalysis.\n\nThe CALET data used in this analysis are provided by the Waseda\nCALET Operation Center located at the Waseda University.",
  "circularId": 20253,
  "createdOn": 1481717081000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "IceCube-161210: CALET Gamma-Ray Burst Monitor upper limits",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>"
}