{
  "submitter": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
  "bibcode": "2023GCN.34723....1N",
  "submittedHow": "web",
  "eventId": "LIGO/Virgo/KAGRA S230917af",
  "createdOn": 1695005222635,
  "body": "H. Negoro, M. Nakajima (Nihon U.),\nT. Mihara, N. Kawai (RIKEN),\nS. Sugita, M. Serino, H. Hiramatsu, H. Nishikawa, Y. Kondo (AGU),\nY. Kawakubo (LSU)\nreport on behalf of the MAXI team:\n\nWe examined MAXI/GSC all-sky X-ray images (2-20 keV)\nafter compact binary merger candidate S230917af at 2023-09-17 10:04:17 UTC .\n\nAt the trigger time of S230917af, the high-voltage of MAXI/GSC was on,\nbut the FOV was out of the 90% credible region of the cwb skymap.\nThe first one-orbit (92 min) scan observation with GSC after the event covered 100%\nof the 90% credible region of the cwb skymap from 10:41:56 to 10:53:01 UTC (T0+2259 to T0+2924 sec).\n\nThere was a low significance burst-like X-ray event at \n(R.A., Dec) = (333.784 deg, 39.435 deg) = (22 15 08, +39 26 06) (J2000) \nwith a statistical 90% C.L. error region of ~0.6 deg.\nThere is an additional systematic uncertainty of 0.1 deg (90% containment radius).\nThe sources region  was observed around 10:50:13 UTC.\nThe X-ray flux averaged over the scan was 48 +- 13 mCrab\n(4.0-10.0keV, 1 sigma error).\n\nIf you require information about X-ray flux by MAXI/GSC at specific coordinates,\nplease contact the submitter of this circular by email. \n",
  "circularId": 34723,
  "subject": "LIGO/Virgo/KAGRA S230917af: MAXI/GSC observations"
}