{
  "bibcode": "2010GCN.10739....1M",
  "body": "M. Morii (Tokyo Tech), M. Nakajima (Nihon U.), S. Nakahira (AGU),\nN. Kawai, K. Sugimori (Tokyo Tech), M. Matsuoka, K. Kawasaki, S. Ueno,\nH. Tomida, M. Kohama, M. Ishikawa (JAXA), T. Mihara, Y.E. Nakagawa,\nM. Sugizaki, M. Suzuki, T. Yamamoto, T. Sootome (RIKEN), A. Yoshida,\nK. Yamaoka (AGU), H. Tsunemi, M. Kimura (Osaka U.), H. Negoro, H. Ozawa,\nF. Suwa (Nihon U.), Y. Ueda, N. Isobe, S. Eguchi, K. Hiroi (Kyoto U.),\nA. Daikyuji (Miyazaki U.), A. Uzawa, T. Matsumura, K. Yamazaki (Chuo U.)\nreport on behalf of the MAXI team\n\nMAXI/GSC detected a bright X-ray transient at a scan transit from\n2010-05-10T19:27:09 to 19:27:37 UT. The transient emission lasted at least\nfor 28 seconds within the 50 second long triangular transit response of\nMAXI/GSC.\nThis event is temporary coincident with the Fermi-GBM Trigger #295212428 at\n2010-05-10T19:27:06.97, thus we identify this event as GRB 100510A.\n\nThe best-fit position of the source is\n(R.A., Dec) = (+355.8 deg, -35.6 deg) = (23 43 10, -35 37 25)(J2000),\nwith a rectangular statistical error box (90%C.L.) of the following corners:\n\n (R.A., Dec) = (+355.69 deg, -35.79 deg) = (23 42 45, -35 47  8)(J2000)\n (R.A., Dec) = (+355.58 deg, -35.55 deg) = (23 42 19, -35 32 49)(J2000)\n (R.A., Dec) = (+355.90 deg, -35.46 deg) = (23 43 35, -35 27 38)(J2000)\n (R.A., Dec) = (+356.00 deg, -35.70 deg) = (23 44  1, -35 41 56)(J2000).\n\nThere is additional systematic uncertainty of 0.2 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\n (R.A., Dec) = (+355.18 deg, -35.92 deg) = (23 40 43, -35 55 12)(J2000)\n (R.A., Dec) = (+355.08 deg, -35.68 deg) = (23 40 18, -35 40 49)(J2000)\n (R.A., Dec) = (+356.70 deg, -35.24 deg) = (23 46 47, -35 14 11)(J2000)\n (R.A., Dec) = (+356.81 deg, -35.47 deg) = (23 47 14, -35 28 27)(J2000).\n\nThe peak X-ray flux was at least 650 +- 70 mCrab (4-10 keV, 1 sigma error).\n\nThe position above is consistent with the Fermi-GBM flight position\non 2010-05-10T19:27:33 UT (record #58, RA=345.10, Dec=-20.03, error=18.37),\nbut outside of the ground position on 2010-05-10T19:27:40 UT (record #57,\nRA=31.87, Dec=-31.55, error=19.12).\n\nThe all-sky image and the light curve will be shown at the MAXI web site\nhttp://maxi.riken.jp/ at the \"News\" section.",
  "circularId": 10739,
  "createdOn": 1273605396000,
  "email": "nkawai@hp.phys.titech.ac.jp",
  "subject": "GRB 100510A: MAXI/GSC detection",
  "submitter": "Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>",
  "eventId": "GRB 100510A"
}