{
  "bibcode": "2016GCN.20277....1L",
  "body": "Y. H. Wang (IHEP), Y. Zhao (IHEP), M. Z. Feng(IHEP), J. C. Sun (IHEP),\nZ. H. Li (IHEP), H. C. Li (IHEP), S. L. Xiong (IHEP),T. Batsch(NCBJ),\nT. Bernasconi (ISDC/UniGe),F. Cadoux (DPNC/UniGe), Y. W. Dong (IHEP),\nM. Y. Ge (IHEP), W.Hajdas (PSI),Y. Huang (IHEP),Karol Jedrzejczak\n(NCBJ), M. R. Kole (DPNC/UniGe), F. J. Lu (IHEP), R. Marcinkowski(PSI),\nM. Pohl (DPNC/UniGe),N. Produit (ISDC/UniGe),A. Rutczynska (NCBJ),\nD. Rybka (NCBJ),L. M. Song (IHEP),J. Szabelski (NCBJ), X. Wen (IHEP),\nB. B. Wu (IHEP),X. Wu(DPNC/UniGe), H. L. Xiao (PSI), M. Xu (IHEP),\nJ. Zhang(IHEP),L. Y. Zhang (IHEP), P. Zhang (PSI), S. N. Zhang(IHEP),\nY. J. Zhang (IHEP), A. Zwolinska (NCBJ)\nreport for the POLAR collaboration:\n\nAt 2016-12-07T20:42:55 UT (T0), during a routine on-ground \nsearch of data, POLAR detected the GRB 161207A, \nwhich was also detected by the CALET (GCN Circ #20246) and Fermi/GBM\n(trigger 502836132/161207863).\n\nThe POLAR light curve consists of several peaks,\nwith a duration (T90) of 27.4 s measured from T0-2.87 s .\nThe 1s peak rate measured from T0+19.00 s is 350.4 cnts/s,\nThe total counts is about 4946 cnts.  The above measurements are\nin the energy range of about 80-500 keV.\n\nLC_URL:\n\nhttp://polar.ihep.ac.cn/grb/2016/GRB161207A/lc/POLAR_lc_grb161207862.jpg\n\nUsing the best location from the Fermi/GBM, which is (J2000):\nRA:    305.020     [deg]\nDec:   +20.700     [deg]\nErr:     4.69      [deg]\n\nthe incident angle in POLAR coordinate at T0 is:\ntheta:  65.4  [deg]\nphi:   -28.6  [deg]\n\nThe analysis results presented above are preliminary.\n\nPOLAR is a dedicated Gamma-Ray Burst polarimeter (50-500 keV) on-board\nthe Chinese space laboratory Tiangong-2 launched on Sep 15, 2016. More\ninformation about POLAR can be found at http://polar.ihep.ac.cn/en/ ,\nhttp://isdc.unige.ch/polar/ and http://polar.psi.ch/html/ .",
  "circularId": 20277,
  "createdOn": 1481949168000,
  "email": "wangyuanhao@ihep.ac.cn",
  "subject": "GRB 161207A: POLAR observation",
  "submitter": "Yuanhao Wang at IHEP/CAS  <wangyuanhao@ihep.ac.cn>",
  "eventId": "GRB 161207A"
}