{
  "bibcode": "2019GCN.25271....1S",
  "body": "T. Sato (Chuo U.), H. Negoro, M. Nakajima, W. Maruyama, M. Aoki, \nK. Kobayashi (Nihon U.), T. Mihara, T. Tamagawa, M. Matsuoka (RIKEN), \nT. Sakamoto, M. Serino, S. Sugita, H. Nishida, A. Yoshida (AGU), \nY. Tsuboi, W. Iwakiri, R. Sasaki, H. Kawai (Chuo U.),  M. Shidatsu (Ehime U.),\nN. Kawai, M. Sugizaki, M. Oeda, K. Shiraishi (Tokyo Tech), S. Nakahira, Y. Sugawara, \nS. Ueno, H. Tomida, M. Ishikawa, N.Isobe, 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)\nreport on behalf of the MAXI team:\n\nThe MAXI/GSC nova alert system triggered on an uncatalogued X-ray transient source \nat 04:49:12 UT on 2019 August 05.\nAssuming that the source flux was constant over the transit,\nwe obtain the source position at\n(R.A., Dec) = (211.853 deg, 19.766 deg) = (14 07 24, +19 45 57) (J2000) \nwith a statistical 90% C.L. elliptical error region \nwith long and short radii of 0.30 deg and 0.29 deg, respectively. \nThe roll angle of the long axis from the north direction is 170.0 deg counterclockwise. \nThere is an additional systematic uncertainty of 0.1 deg (90% containment radius).\nThe X-ray flux averaged over the scan was 109 +- 18 mCrab\n(4.0-10.0keV, 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(R.A., Dec) = (210.974, 20.151) deg = (14 03 53, +20 09 03) (J2000) \n(R.A., Dec) = (210.941, 19.551) deg = (14 03 45, +19 33 03) (J2000) \n(R.A., Dec) = (212.931, 19.442) deg = (14 11 43, +19 26 31) (J2000) \n(R.A., Dec) = (212.971, 20.042) deg = (14 11 53, +20 02 31) (J2000) \nThere was no significant excess flux in the previous transit at 03:16 UT\nwith an upper limit of 20 mCrab.\n\nThis burst is likely the same one that Fermi detected about 3 min earlier\n(Trigger number 586673165).",
  "circularId": 25271,
  "createdOn": 1564983141000,
  "email": "negoro@cygnus.phys.cst.nihon-u.ac.jp",
  "subject": "GRB 190805B: MAXI/GSC detection",
  "submitter": "Hitoshi Negoro at Nihon U  <negoro@cygnus.phys.cst.nihon-u.ac.jp>",
  "eventId": "GRB 190805B"
}