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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"

9 results found.

  1. GRB 211024B: Host galaxy redshift from X-shooter/VLT
  2. GRB 211024B: Optical afterglow observation by Ondrejov D50
  3. GRB 211024B: Swift/UVOT detection
  4. GRB 211024B: CAHA 2.2m Detection; ultra-long GRB?
  5. GRB 211024B: Swift-XRT refined Analysis
  6. GRB 211024B: Swift-BAT refined analysis
  7. GRB 211024B: Nanshan/NEXT optical afterglow detection
  8. Swift GRB 211024B: Global MASTER-Net observations report
  9. GRB 211024B: Swift detection of a burst

Advanced

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