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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"

16 results found.

  1. GRB190311A: MITSuME Akeno optical observation
  2. GRB 190311A: OSN optical afterglow detection
  3. GRB 190311A: Swift/UVOT Detection
  4. GRB 190311A: Mondy optical observations
  5. GRB 190311A: Liverpool Telescope observations
  6. GRB 190311A: NOT optical counterpart
  7. GRB 190311A: Swift-BAT refined analysis
  8. GRB 190311A: Mondy optical observations
  9. GRB 190311A: GMG observation
  10. GRB 190311A: Fermi GBM observation
  11. GRB 190311A: Swift-XRT refined Analysis
  12. GRB 190311A: TSHAO optical observations
  13. GRB 190311A: Enhanced Swift-XRT position
  14. GRB 190311A: NEXT-0.6m optical afterglow detection
  15. GRB 190311A: Mondy optical observations
  16. GRB 190311A: Swift detection of a burst with optical counterpart

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
Questions or comments?
Contact GCN directly.
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Open an issue.
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Get involved on GitHub.

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