{
  "subject": "GRB 230307A: MAXI/GSC upper limit",
  "eventId": "GRB 230307A",
  "bibcode": "2023GCN.33448....1S",
  "createdOn": 1678421014000,
  "circularId": 33448,
  "submitter": "Motoko Serino at Aoyama Gakuin U.  <serino@phys.aoyama.ac.jp>",
  "email": "serino@phys.aoyama.ac.jp",
  "body": "S. Sugita, M. Serino (AGU), H. Negoro (Nihon U.), T. Mihara (RIKEN),\nM. Nakajima, K. Kobayashi, M. Tanaka, Y. Soejima (Nihon U.),\nT. Kawamuro, S. Yamada, T. Tamagawa, M. Matsuoka (RIKEN),\nT. Sakamoto, H. Hiramatsu, H. Nishikawa, A. Yoshida (AGU),\nY. Tsuboi, J. Kohara, S. Urabe, S. Nawa, N. Nemoto (Chuo U.),\nM. Shidatsu, M. Iwasaki (Ehime U.),\nN. Kawai, M. Niwano, R. Hosokawa, Y. Imai, N. Ito, Y. Takamatsu (Tokyo Tech),\nS. Nakahira, S. Ueno, H. Tomida, M. Ishikawa, T. Kurihara (JAXA),\nY. Ueda, S. Ogawa, K. Setoguchi, T. Yoshitake, K. Inaba, Y. Nakatani (Kyoto U.),\nM. Yamauchi, T. Sato, R. Hatsuda, R. Fukuoka, Y. Hagiwara, Y. Umeki (Miyazaki U.),\nK. Yamaoka (Nagoya U.),\nY. Kawakubo (LSU),\nM. Sugizaki (NAOC) ,\nW. Iwakiri (Chiba U.) \nreport on behalf of the MAXI team:\n\nWe report the non-detection of MAXI/GSC of GRB 230307A \n(Fermi-GBM GCN #33405, #33407 #33411; GECAM GCN #33406, \nSolar Orbiter STIX GCN #33410; AGILE/MCAL GCN #33412;\nHEND/Mars Odyssey, INTEGRAL SPI-ACS, Swift/BAT GCN #33413;\nAstroSat CZTI GCN #33415; GRBAlpha GCN #33418; \nVZLUSAT-2 GCN #33424; Konus-Wind GCN #33427;\nAstroSat LAXPC GCN #33437; ASO-S/HXI GCN #33438;\n).\nAt 15:58:54 UT on 2023-03-07 (888s after the Fermi/GBM trigger),\nMAXI/GSC scanned the error region of the event.\nThe scan time of the five consecutive scans were\n17:31:49 (t0+6463s), 19:04:40 (t0+12034s), 20:37:36 (t0+17610s),\n22:10:27 (t0+23181s), and 23:43:22 (t0+28756s).\nNo significant excess emission was detected from the region. \nTypical 1-sigma upper limits in 2-20 keV for one scan (and six scans) are\n20 mCrab (and 8 mCrab)."
}