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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"

17 results found.

  1. GRB 120811C: optical observations
  2. GRB 120811C: optical observations
  3. GCN for GRB 120811C
  4. GRB 120811C: EVLA Observations
  5. GRB 120811C: RTT150 optical observations
  6. GRB 120811C: MASTER-Tunka OT observations
  7. GRB 120811C: Swift-BAT refined analysis
  8. GRB 120811C: NOT redshift
  9. GRB 120811C: Bassano Bresciano Observatory optical observations
  10. GRB 120811C: Swift-XRT refined Analysis
  11. GRB 120811C: Swift/UVOT Detection
  12. GRB 120811C: Redshift from OSIRIS/GTC
  13. GRB 120811C: RTT150 optical observations
  14. GRB 120811C: Enhanced Swift-XRT position
  15. GRB 120811C: TAROT Calern observatory optical observations
  16. GRB 120811C: MASTER-Amur observations of fading OT
  17. GRB 120811C: Swift detection of a burst with an optical counterpart

Advanced

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