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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"

11 results found.

  1. GRB 071227: Suzaku WAM observation of the prompt emission
  2. GRB 071227: optical afterglow
  3. Further Swift-BAT analysis of GRB 071227
  4. Konus-Wind observation of GRB 071227
  5. GRB 071227: Magellan redshift confirmation
  6. GRB 071227: Swift-XRT refined analysis
  7. GRB 071227: VLT probable redshift of the candidate host galaxy
  8. GRB 071227: Magellan observations
  9. GRB 071227: REM NIR and Optical observations
  10. Swift-BAT refined analysis of short GRB 071227
  11. GRB 071227: Swift detection of a burst

Advanced

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