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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"

14 results found.

  1. Skynet/Dolomiti observations of GRB 110928A
  2. Skynet observations of GRB 110928A
  3. GRB 110928A: RAPTOR Limits During Gamma-ray Emitting Interval
  4. GRB 110928A: Swift/UVOT Upper Limits
  5. GRB 110928A: Swift-XRT refined Analysis
  6. GRB 110928A: Enhanced Swift-XRT position
  7. GRB 110928A: P60 Observations
  8. GRB 110928A: Further PAIRITEL NIR Observations
  9. GRB 110928A: Swift-BAT refined analysis
  10. GRB 110928A: Swift-XRT observations
  11. GRB 110928A: Swift/UVOT finding chart observation
  12. GRB 110928A: PAIRITEL NIR Observations
  13. GRB 110928A: ROTSE-III Optical Limits
  14. GRB 110928A: Swift detection of a burst

Advanced

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