{
  "editedOn": 1779372624380,
  "bibcode": "2026GCN.44678....1K",
  "version": 2,
  "body": "Nicholas Kirschner (a), Daniel Shy (b), C.C. Cheung (b), Bernard Phlips (b), Michael Streicher\n(c), James Mason (c), Douglas M. Groves (c), Feng Zhang (c), and Willy Kaye (c)\n(a) National Research Council Research Associate resident at the U.S. Naval Research\nLaboratory, 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 260411B, which was also detected\nby Fermi GBM (GCN 44415), AstroSat (GCN 44421), GECAM-B (GCN 44423), and\nSVOM/GRM (GCN 44424).\n\nUsing 1 Hz binning, and adopting T0 = 2026-04-28T14:20:34.992Z, we observe one peak at\nT0+1.5s, with peak excess count rate of 49 above the 97 cps baseline rate observed in nearby offsource intervals.\n\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.",
  "circularId": 44678,
  "createdOn": 1779372129821,
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of nicholasjkirschner@gmail.com",
  "submitter": "nicholasjkirschner@gmail.com",
  "subject": "GRB 260428A: TERI Gamma-ray detection",
  "submittedHow": "web",
  "eventId": "GRB 260428A",
  "format": "text/plain"
}