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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. Refined IPN Triangulation of GRB 130502B
  2. GRB 130502B: Suzaku WAM observation of the prompt emission
  3. GRB 130502B: Swift-XRT refined Analysis
  4. GRB 130502B: possible TNG counterpart
  5. IPN Triangulation of GRB 130502B
  6. GRB 130502B: Swift/UVOT Upper Limits
  7. Konus-Wind observation of GRB 130502B
  8. GRB 130502B: P60 Observations
  9. GRB 130502B Swift-XRT observations
  10. GRB 130502B: Fermi LAT Detection
  11. GRB 130502B: Fermi GBM detection of a burst

Advanced

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