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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. GRB080607: optical observation
  2. GRB 080607: AGILE-MCAL observation of the prompt emission
  3. Konus-Wind observation of GRB 080607
  4. GRB 080607: Swift-XRT refined analysis
  5. Swift/UVOT Observations of GRB080607
  6. GRB 080607 KAIT observations
  7. GRB 080607: Enhanced Swift-XRT position
  8. GRB 080607, Swift-BAT refined analysis
  9. GRB 080607 - PAIRITEL NIR detection
  10. GRB 080607: Keck/LRIS spectroscopy and redshift
  11. GRB 080607: Super-LOTIS early observations
  12. GRB 080607: Swift detection of a burst with optical afterglow
  13. GRB 080607: ROTSE-III Detection of Optical Counterpart

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
Questions or comments?
Contact GCN directly.
Have you found a bug in GCN?
Open an issue.
Want to contribute code to GCN?
Get involved on GitHub.

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