{
  "bibcode": "2015GCN.18666....1N",
  "body": "GRB 151205C: MAXI/GSC detection\n\nM. Nakajima, H. Negoro (Nihon U.), M. Serino (RIKEN), T. Sakamoto (AGU),\nS. Nakahira, S. Ueno, H. Tomida, M. Kimura, M. Ishikawa, Y. E. Nakagawa (JAXA),\nT. Mihara, M. Sugizaki, M. Shidatsu, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN),\nN. Kawai, M. Arimoto, T. Yoshii, Y. Tachibana, Y. Ono, T. Fujiwara (Tokyo Tech),\nA. Yoshida, Y. Kawakubo, H. Ohtsuki (AGU),\nH. Tsunemi, R. Imatani (Osaka U.),\nK. Tanaka, T. Masumitsu (Nihon U.),\nY. Ueda, T. Kawamuro, T. Hori, A. Tanimoto (Kyoto U.),\nY. Tsuboi, S. Kanetou, Y. Nakamura, R. Sasaki (Chuo U.),\nM. Yamauchi, D. Itoh (Miyazaki U.),\nK. Yamaoka (Nagoya U.),\nM. Morii (ISM)\nreport on behalf of the MAXI team:\n\nThe MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at UT 2015/12/05 23:54:06.\nAssuming that the source flux was constant over the transit,\nwe obtain the source position at\n(R.A., Dec) = (329.725 deg, 77.705 deg) = (21 58 54, +77 42 17) (J2000)\nwith a statistical 90% C.L. elliptical error region\nwith long and short radii of 0.24 deg and 0.2 deg, respectively.\nThe roll angle of long axis from the north direction is 102.0 deg counterclockwise.\nThere is an additional systematic uncertainty of 0.1 deg (90% containment radius).\nThe X-ray flux averaged over the scan was 152 +- 24 mCrab\n(4-10keV, 1 sigma error).\n\nWithout assumptions on the source constancy, we obtain a rectangular error\nbox for the transient source with the following corners:\n(326.621 deg, 76.996 deg) = (21 46 29, +76 59 46) (J2000)\n(328.465 deg, 76.767 deg) = (21 53 51, +76 46 02) (J2000)\n(333.174 deg, 78.383 deg) = (22 12 41, +78 23 00) (J2000)\n(331.143 deg, 78.636 deg) = (22 04 34, +78 38 08) (J2000)\n\nThere was no significant excess flux in the previous transit at UT 22:21\nand in the next transit at 12/6 01:26 UT with an upper limit of 20 mCrab for each.\n\nDetection Information:\nhttp://maxi.riken.jp/alert/novae/7361767105/7361767105.htm",
  "circularId": 18666,
  "createdOn": 1449366678000,
  "email": "negoro@phys.cst.nihon-u.ac.jp",
  "subject": "GRB 151205C: MAXI/GSC detection",
  "submitter": "H. Negoro at Nihon U.  <negoro@phys.cst.nihon-u.ac.jp>",
  "eventId": "GRB 151205C"
}