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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. Konus-Wind observation of GRB 060912
  2. GRB 060912: Redshift of nearby 2MASS galaxy
  3. GRB 060912B: Watcher observations
  4. GRB060912: OPTIMA-Burst optical observations
  5. GRB 060912: Swift XRT Team Refined Analysis
  6. GRB 060912, Swift-BAT refined analysis
  7. GRB 060912: Correction to GCN 5559
  8. GRB 060912: Xinglong TNT optical observations
  9. GRB 060912: Swift detection of a burst with an optical afterglow

Advanced

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