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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').

4 results found.

  1. GRB 230908A: CALET Gamma-Ray Burst Monitor detection
  2. GRB 230908A: Swift/BAT-GUANO detection of a long burst outside the coded FOV
  3. GRB 230908A: GRBAlpha detection
  4. GRB 230908A: AstroSat CZTI detection

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