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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"

7 results found.

  1. GRB 141202A: Suzaku WAM observation of the prompt emission
  2. GRB 141202A: Swift/UVOT Detection of a Variable Source Near the IPN Error Box
  3. Konus-Wind observation of GRB 141202A
  4. GRB 141202A: Swift XRT observations
  5. GRB 141202A: Fermi GBM Detection
  6. GRB 141202A Tiled Swift observations
  7. IPN Triangulation of GRB 141202A (short/hard)

Advanced

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