{
  "eventId": "GRB 260316B",
  "bibcode": "2026GCN.44100....1T",
  "submittedHow": "web",
  "createdOn": 1774338916464,
  "body": "T. Tamura (Kanagawa U), A. Yoshida, T. Sakamoto, S. Sugita, Y. Kawakubo (AGU),\nK. Yamaoka (Nagoya U), S. Nakahira (JAXA), Y. Asaoka (ICRR), S. Torii,\nY. Akaike, K. Kobayashi (Waseda U), Y. Shimizu (Kanagawa U),\nN. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe GRB 260316B (Fermi GBM Final Real-time Localization: Fermi GBM \nteam, GCN Circ. 44031; AstroSat CZTI detection: Harsha et al., GCN Circ. \n44035; SVOM/GRM observation: Wang et al., GCN Circ. 44039; GECAM-B \nobservation: Wang et al., GCN Circ. 44040) triggered the CALET Gamma-ray\nBurst Monitor (CGBM) at 17:12:52.15 UTC on 16 March 2026\n(https://cgbm.calet.jp/cgbm_trigger/flight/1457716347/index.html).\nThe burst signal was seen by all CGBM detectors.  \n\nThe burst light curve shows a single pulse that starts\nat T+0.38 sec, peaks at T+1.25 sec, and ends at T+2.37 sec.\nThe T90 and T50 durations measured by the SGM data are 1.75 +/- 0.18 sec\nand 0.75 +/- 0.13 sec (40-1000 keV), respectively.\n\nThe ground-processed light curve is available at\n\nhttps://cgbm.calet.jp/cgbm_trigger/ground/1457716347/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at Waseda University.",
  "circularId": 44100,
  "format": "text/plain",
  "subject": "GRB 260316B: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Yuta Kawakubo at Aoyama Gakuin University <kawakubo@phys.aoyama.ac.jp>"
}