{
  "format": "text/plain",
  "circularId": 41610,
  "subject": "LIGO/Virgo/KAGRA S250830bp: Coverage and upper limits from MAXI/GSC observations",
  "body": "T. Mihara, N. Kawai (RIKEN),\nM. Nakajima, H. Negoro, K. Takagi (Nihon U.),\nS. Sugita, M. Serino, Y. Kawakubo, H. Hiramatsu, Y. Kondo (AGU)\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 S250830bp at 2025-08-30 10:24:18.852 UTC (GCN 41606, 41607).\n\nAt the trigger time of S250830bp, the high-voltage of MAXI/GSC was on,\nbut the FOV was out of the 90% credible region of the Bilby skymap.\nThe credible region was observed about 3 minutes before the GW trigger time with GSC, and \nthe first one-orbit (92 min) scan observation after the event covered 100%\nof the 90% credible region from 11:52:34 to 11:53:19 UTC (T0+5296 to T0+5341 sec).\n\nNo significant new source was found in the region in those observations.\nA typical 1-sigma averaged upper limit obtained in one scan observation\nis 20 mCrab at 2-20 keV.\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",
  "submitter": "Satoshi Sugita at Aoyama Gakuin U. <sugita@phys.aoyama.ac.jp>",
  "bibcode": "2025GCN.41610....1M",
  "eventId": "LIGO/Virgo/KAGRA S250830bp",
  "submittedHow": "web",
  "createdOn": 1756562737515
}