{
  "bibcode": "2020GCN.27960....1M",
  "body": "K. Miike (Miyazaki U.), H. Negoro (Nihon U.), Y. Kawakubo (LSU), \nM. Nakajima, M. Aoki, K. Kobayashi, R. Takagi, K, Asakura, \nK, Seino, S. Mokumoto (Nihon U.), \nT. Mihara, C. Guo, Y. Zhou, T. Tamagawa, M. Matsuoka (RIKEN), \nT. Sakamoto, M. Serino, S. Sugita, H. Nishida, A. Yoshida (AGU), \nY. Tsuboi, W. Iwakiri, R. Sasaki, H. Kawai, Y. Okamoto, S. Kitakoga (Chuo U.), \nM. Shidatsu (Ehime U.), N. Kawai, R. Adachi, M. Niwano (Tokyo Tech), \nS. Nakahira, Y. Sugawara, S. Ueno, H. Tomida, M. Ishikawa, M. Tominaga, T. Nagatsuka (JAXA), \nY. Ueda, S. Yamada, S. Ogawa, K. Setoguchi, T. Yoshitake (Kyoto U.), \nH. Tsunemi (Osaka U.), M. Yamauchi, K. Kurogi (Miyazaki U.), \nT. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.), M. Sugizaki (NAOC) \nreport on behalf of the MAXI team:\n\nThe MAXI/GSC nova alert system triggered on an uncatalogued X-ray transient source \nat 10:30:18 UT on 2020 June 15.\nAssuming that the source flux was constant over the transit,\nwe obtain the source position at\n(R.A., Dec) = (153.421 deg, -5.158 deg) = (10 13 41, -05 09 28) (J2000) \nwith a statistical 90% C.L. elliptical error region \nwith long and short radii of 0.34 deg and 0.3 deg, respectively. \nThe roll angle of the long axis from the north direction is 180.0 deg counterclockwise. \nWithout assumptions on the source flux constancy, we obtain a rectangular error\nbox for the transient source with the following corners:\n(R.A., Dec) = (152.024, -3.311) deg = (10 08 05, -03 18 39) (J2000) \n(R.A., Dec) = (151.564, -3.753) deg = (10 06 15, -03 45 10) (J2000) \n(R.A., Dec) = (153.538, -5.793) deg = (10 14 09, -05 47 34) (J2000) \n(R.A., Dec) = (153.998, -5.350) deg = (10 15 59, -05 20 59) (J2000) \nThere is an additional systematic uncertainty of 0.1 deg (90% containment radius)\nin both error regions.\n\nThe X-ray flux averaged over the scan was 85 +- 19 mCrab\n(4.0-10.0keV, 1 sigma error).\n\nThere was no significant excess flux in the previous transit at 08:57 UT\nand in the next transit at 12:03 UT with an upper limit of 20 mCrab for each.",
  "circularId": 27960,
  "createdOn": 1592271627000,
  "email": "negoro.hitoshi@nihon-u.ac.jp",
  "subject": "GRB 200615B: MAXI/GSC detection",
  "submitter": "Hitoshi Negoro at Nihon U  <negoro.hitoshi@nihon-u.ac.jp>",
  "eventId": "GRB 200615B"
}