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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. 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').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

14 results found.

  1. GRB 080710: Optical observation with MITSuME Okayama
  2. GRB 080710: TLS observations, steepening afterglow decay
  3. GRB 080710: Lick IR detection
  4. GRB 080710, Swift-BAT refined analysis
  5. GRB 080710: Rapid PROMPT Observations
  6. GRB 080710: Swift-XRT refined analysis
  7. GRB 080710: Enhanced Swift-XRT position
  8. GRB 080710: Faulkes Telescope North observations
  9. GRB 080710: Gemini spectroscopy and probable redshift
  10. UVOT white band observations of GRB080710
  11. GRB 080710: REM afterglow confirmation & brightening
  12. GRB 080710: KAIT OA candidate
  13. GRB 080710: Swift XRT position
  14. GRB 080710: Swift detection of a burst

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
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