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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"

13 results found.

  1. GRB 060714: Swift/UVOT Observations
  2. GRB 060714: NOT observations
  3. GRB 060714: OA fading and a possible host detection
  4. GRB 060714: Refined analysis of the Swift-BAT burst
  5. GRB 060714: REM infrared observations
  6. GRB 060714, SMARTS optical/IR afterglow observation
  7. GRB 060714 : Liverpool Telescope Observations
  8. GRB 060714: Swift XRT refined analysis
  9. GRB 060714: OA redshift
  10. Correction to Circular 5314: Circular refers to GRB 060714
  11. GRB060707 possible optical confirmation
  12. GRB 060714, optical observation
  13. GRB 060714: Swift detection of a burst with an UVOT optical afterglow

Advanced

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