{
  "bibcode": "2019GCN.25502....1S",
  "body": "S. Sugita,  H. Nishida, M. Serino (AGU), H. Negoro (Nihon U.), K.\nAsakura (Osaka U.),\nM. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi (Nihon U.),\nT. Mihara, T. Tamagawa, M. Matsuoka (RIKEN),\nT. Sakamoto, A. Yoshida (AGU),\nW. Iwakiri, Y. Tsuboi,  R. Sasaki, H. Kawai, T. Sato (Chuo U.),\nM. Shidatsu (Ehime U.),\nN. Kawai, M. Sugizaki, M. Oeda, K. Shiraishi (Tokyo Tech),\nS. Nakahira, Y. Sugawara, S. Ueno, H. Tomida, M. Ishikawa, N.Isobe, R.\nShimomukai, M. Tominaga (JAXA),\nY. Ueda, A. Tanimoto, S. Yamada, S. Ogawa, K. Setoguchi, T. Yoshitake\n(Kyoto U.),\nH. Tsunemi, T. Yoneyama, S. Ide (Osaka U.),\nM. Yamauchi, S. Iwahori, Y. Kurihara, K. Kurogi, K. Miike (Miyazaki U.),\nT. Kawamuro (NAOJ),\nK. Yamaoka (Nagoya U.),\nY. Kawakubo (LSU)\nreport on behalf of the MAXI team:\n\nThe MAXI/GSC nova alert system triggered a bright uncatalogued X-ray\ntransient source at 07:58:01 UT on 2019 August 28.\nAssuming that the source flux was constant over the transit,\nwe obtain the source position at\n(R.A., Dec) = (58.011 deg, 46.448 deg) = (03 52 02, +46 26 52)  (J2000)\nwith a 90% C.L. statistical error of 0.25 deg and an additional\nsystematic uncertainty of 0.1 deg (90% containment radius).\n\nWithout assumptions on the source constancy, we obtain a rectangular error\nbox for the transient source with the following corners:\n(56.303, 46.041) deg = (03 45 12, +46 02 27) (J2000)\n(56.644, 45.605) deg = (03 46 34, +45 36 17) (J2000)\n(60.044, 46.816) deg = (04 00 10, +46 48 57) (J2000)\n(59.724, 47.262) deg = (03 58 53, +47 15 43) (J2000)\n\nThe X-ray flux averaged over the scan was 193 +- 27 mCrab\n(4.0-10.0keV, 1 sigma error).",
  "circularId": 25502,
  "createdOn": 1566981855000,
  "email": "sugita@phys.aoyama.ac.jp",
  "subject": "GRB 190828A: MAXI/GSC detection",
  "submitter": "Satoshi Sugita at Aoyama Gakuin U.  <sugita@phys.aoyama.ac.jp>",
  "eventId": "GRB 190828A"
}