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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. Radio observations of GRB 060719
  2. GRB 060719: TORTOREM optical upper limits
  3. GRB 060719: near-infrared afterglow
  4. GRB 060719: correction to the coordinates reported in GCN 5347
  5. GRB 060719: Swift/UVOT Upper Limits
  6. GRB 060719: VLT/ISAAC observations
  7. GRB 060719: Refined analysis of the Swift-BAT burst
  8. GRB 060719: XRT refined analysis
  9. GRB 060719: further analysis of VLT observations
  10. GRB 060719: optical limit by Pi-of-the-Sky
  11. GRB 060719: prompt PROMPT observations
  12. GRB060719: REM NIR Observations
  13. GRB 060719: Continued LCO optical observations
  14. GRB 060719: VLT observations
  15. GRB 060719: LCO optical observations
  16. GRB 060719: Swift detection of a burst

Advanced

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