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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"

14 results found.

  1. GRB 110709A / EVLA upper limits
  2. GRB 110709A: Suzaku WAM observation of the prompt emission
  3. GRB 110709A: Swift/UVOT Upper Limits
  4. GRB 110709A: Konkoly observations
  5. GRB 110709A: Swift-XRT refined Analysis
  6. GRB110709A: MITSuME Ishigakijima Optical upper limits
  7. Konus-Wind observation of GRB 110709A
  8. GRB 110709A: Fermi GBM observation
  9. GRB 110709A: Swift-BAT refined analysis
  10. GRB 110709A : Xinglong TNT upper limit
  11. GRB 110709A: Enhanced Swift-XRT position
  12. GRB 110709A: MASTER-NET optical observations
  13. GRB 110709A: Prompt enhanced Swift-XRT position
  14. GRB 110709A: Swift detection of a burst

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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