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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').

9 results found.

  1. GRID detection of GRB 230827A
  2. GRB 230827A: Glowbug gamma-ray detection
  3. GRB 230827A: Fermi GBM Observation
  4. GRB 230827A: VZLUSAT-2 detection
  5. GRB 230827A: Swift/BAT-GUANO detection of a burst outside the coded FOV
  6. GRB 230827A: GRBAlpha detection
  7. GRB 230827A: BALROG localization (Fermi Trigger / GRB 230827762)
  8. Fermi GRB 230827A: Global MASTER-Net observations report
  9. GRB 230827A: Fermi GBM Final Real-time Localization


Download all Circulars as a .tar.gz archive:
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