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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. GRB 060605 new redshift
  2. GRB 060605: NIR Observations
  3. GRB 060605, observations using an Integral Field Unit
  4. GRB 060605: VLA Observation
  5. GRB 060605: SkyNet Optical Limits
  6. GRB 060605, optical observations
  7. GRB 060605: RTT150 optical observations
  8. GRB 060605 BAT refined analysis
  9. GRB 060605: Xinglong TNT optical observations
  10. GRB 060605: Swift-XRT Team refined analysis
  11. SALT spectroscopy of GRB 060605
  12. GRB 060605: TNG optical observations
  13. GRB 060605: RTT150 optical observations
  14. GRB 060605: ROTSE-III Optical Counterpart
  15. GRB 060605: Swift detection of a burst with optical counterpart
  16. GRB 060605: 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.
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Get involved on GitHub.

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