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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"

11 results found.

  1. GRB 060515: Upper Limit on Host Galaxy
  2. GRB 060515: NIR observation
  3. GRB 060515 BAT refined analysis
  4. GRB 060515: Swift/XRT Team refined analysis
  5. GRB 060515: Swift/UVOT Upper Limits
  6. GRB 060515: Swift/XRT position
  7. GRB 060515: Super-LOTIS Observations
  8. GRB060515: Swift/UVOT initial observation
  9. GRB 060515: TAROT optical observation
  10. GRB 060515: ROTSE-III Optical Limits
  11. GRB 060515: Swift detection of a burst

Advanced

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