{
  "body": "Nicholas Kirschner (a), Daniel Shy (b), C.C. Cheung (b), Bernard Phlips (b), Michael Streicher (c), James Mason (c), Douglas M. Groves (c), Feng Zhang (c), and Willy Kaye (c)   \n \n(a) National Research Council Research Associate resident at the U.S. Naval Research Laboratory, 4555 Overlook Ave SW, Washington, DC 20375 \n(b) U.S. Naval Research Laboratory, 4555 Overlook Ave SW, Washington, DC 20375   \n(c) H3D, Inc., 812 Avis Dr., Ann Arbor, MI 48108, USA\n\nThe cadmium zinc TElluride Radiation Imager (TERI) gamma-ray telescope [1], operating on\nthe International Space Station, reports the detection of GRB 260307A, which was also detected\nby Fermi/GBM (GCN 43939), Glowbug (GCN 43950), GECAM-B (GCN 43961), and CALET\n(GCN 43982).\n\nUsing 1 Hz binning and adopting T0 = 2026-03-07T11:27:59.32Z, we observe three peaks at\nT0+1.375s, T0+3.125s, and T0+5.125s with peak excess count rate of 144, 116, 96 above the\n100 cps baseline rate observed in nearby off-source intervals.\nThe analysis results presented here are preliminary and currently lack a detailed response\nfunction.\n\nTERI is an Office of Naval Research funded technology demonstrator for large-volume pixelated\nCdZnTe detectors developed, built, and operated by the U.S. Naval Research Laboratory (NRL)\nin conjunction with H3D, Inc. The pixelated CdZnTe detectors have an energy range of 40 keV\nto 3 MeV per pixel. It was launched on 2025 April 21 aboard the Department of Defense Space\nTest Program STP-H10 to the ISS. On the ISS, it is located on the SOX external payload facility\non the Columbus module. Analysis of TERI data at NRL is supported by the Office of Naval\nResearch 6.1.\n\n[1] Shy, Daniel, et al. \"Development of the cadmium zinc TElluride Radiation Imager.\" Journal\nof Astronomical Telescopes, Instruments, and Systems 10.4 (2024): 044009-044009\n(arXiv:2408.04559).\n\nDistribution Statement A: Approved for public release. Distribution is unlimited.",
  "submittedHow": "web",
  "eventId": "GRB 260307A",
  "submitter": "nicholasjkirschner@gmail.com",
  "createdOn": 1779372410383,
  "format": "text/plain",
  "circularId": 44682,
  "subject": "GRB 260307A: TERI Gamma-ray detection",
  "bibcode": "2026GCN.44682....1K"
}