{
  "bibcode": "2020GCN.27355....1A",
  "body": "R. Adachi (Tokyo Tech),  R. Takagi, H. Negoro (Nihon U.), S. Nakahira (JAXA),\nM. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi (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, T. Sato (Chuo U.), \nM. Shidatsu (Ehime U.), N. Kawai, M. Oeda, K. Shiraishi (Tokyo Tech), \nS. Nakahira, Y. Sugawara, S. Ueno, H. Tomida, M. Ishikawa, R. Shimomukai, M. Tominaga (JAXA), \nY. Ueda, A. Tanimoto, S. Yamada, S. Ogawa, K. Setoguchi, T. Yoshitake (Kyoto U.), \nH. Tsunemi, T. Yoneyama, K. Asakura, S. Ide (Osaka U.), \nM. Yamauchi, S. Iwahori, Y. Kurihara, K. Kurogi, K. Miike (Miyazaki U.), \nT. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.), Y. Kawakubo (LSU), M. Sugizaki (NAOC) \nreport on behalf of the MAXI team:\n\nThe MAXI/GSC nova alert system triggered on a bright uncatalogued X-ray transient source \nat 09:23:08 UT on March 10, 2020. Assuming that the source flux was constant over the transit,\nwe obtain the source position at\n(R.A., Dec) = (227.499 deg, 48.325 deg) = (15 09 59, +48 19 31) (J2000)\nwith a 90% C.L. statistical error of 0.44 deg and an additional systematic uncertainty of \n0.1 deg (90% containment radius).\nWithout assuming the source constancy, we obtain a rectangular \nerror box (90%C.L.) with the following corners: \n(225.938, 49.050) deg = (15 03 45, +49 02 59) (J2000) \n(225.620, 48.200) deg = (15 02 28, +48 12 00) (J2000) \n(229.907, 47.407) deg = (15 19 37, +47 24 25) (J2000) \n(230.291, 48.244) deg = (15 21 09, +48 14 38) (J2000)\nThere is an additional systematic uncertainty of 0.2 deg (90% containment radius).\n\nThe X-ray flux averaged over the scan was 71 +- 17 mCrab (4.0-10.0keV, 1 sigma error).\nThere was no significant excess flux in the previous transit at 07:50 UT,\nand in the next transit at 10:56 UT with an upper limit of 20 mCrab for each.",
  "circularId": 27355,
  "createdOn": 1583841124000,
  "email": "negoro.hitoshi@nihon-u.ac.jp",
  "subject": "GRB 200310A: MAXI/GSC detection",
  "submitter": "Hitoshi Negoro at Nihon U  <negoro.hitoshi@nihon-u.ac.jp>",
  "eventId": "GRB 200310A"
}