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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').

6 results found.

  1. VLT/UVES spectroscopy of GRB050820
  2. GRB 050820: Early RAPTOR detections
  3. GRB 050820 Swift-BAT refined analysis
  4. GRB 050820: P60 Temporal Decay Index
  5. GRB 050820: High Resolution Spectroscopy from Keck
  6. GRB 050820: Swift detection of a GRB


Download all Circulars as a .tar.gz archive:
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