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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 130609B: Suzaku WAM observation of the prompt emission
  2. GRB 130609B: Theoretical redshift estimation
  3. GRB 130609B: Fermi GBM observation
  4. GRB 130609B, Further Swift-BAT refined analysis
  5. GRB 130609B: GROND observations
  6. GRB 130609B, Swift-BAT refined analysis
  7. GRB 130609B: Swift/UVOT Observations
  8. Konus-Wind observation of GRB 130609B
  9. GRB 130609B: Swift-XRT refined Analysis
  10. GRB 130609B: Enhanced Swift-XRT position
  11. GRB 130609B: 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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