{
  "eventId": "GRB 260922A",
  "submittedHow": "web",
  "circularId": 45747,
  "format": "text/plain",
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "body": "C.C. Cheung, R. Woolf, M. Kerr, J.E. Grove (NRL), A. Goldstein (USRA), C.A. Wilson-Hodge, D. Kocevski (MSFC), and M.S. Briggs (UAH) report:\n\nThe Glowbug gamma-ray telescope [1,2,3], operating on the International Space Station, reports the detection of GRB 260922A, which was also detected by Swift/BAT (GCN 45690, 45703), CALET (GCN 45716), NuSTAR (GCN 45728), and Konus-Wind (GCN 45729)\n\nUsing an adaptive window with a resolution of 32-ms, the burst onset is determined to be 2026-09-22 10:00:37.128 with a duration of 2.8 s and a total significance of about 14.9 sigma.  The light curve comprises a single peak.\n\nThe analysis results presented here are preliminary and use a response function that lacks a detailed characterization of the surrounding passive structure of the ISS. Glowbug is a NASA-funded technology demonstrator for sensitive, low-cost gamma-ray transient telescopes developed, built, and operated by the U.S. Naval Research Laboratory (NRL) with support from the University of Alabama in Huntsville, USRA, and NASA MSFC.  \n\n[1] Grove, J.E. et al. 2020, Proc. Yamada Conf. LXXI, arXiv:2009.11959 \n[2] Woolf, R.S. et al. 2022, Proc. SPIE, 12181, id. 121811O \n[3] Woolf, R.S. et al. 2024, Proc. SPIE, 13151, id. 1315108 \n\nDistribution Statement A: Approved for public release.  Distribution is unlimited.",
  "createdOn": 1790355840027,
  "subject": "GRB 260922A: Glowbug gamma-ray detection",
  "submitter": "C.C. Cheung at Naval Research Lab <Teddy.Cheung@nrl.navy.mil>"
}