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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. GRB 120320A: optical upper limit in Mondy observatory
  2. GRB 120320A: early optical upper limit
  3. GRB 120320A: Zadko optical observations
  4. GRB 120320A, the review of the sky area in plate archives
  5. GRB 120320A: Swift/UVOT Upper Limits
  6. GRB 120320A: MITSuME Okayama Optical upper limits
  7. GRB 120320A , optical observations
  8. GRB 120320A: BOOTES-4 optical upper limit
  9. GRB 120320A: Swift-XRT refined Analysis
  10. GRB 120320A, Swift-BAT refined analysis
  11. GRB 120320A: Gemini-N and UKIRT observations
  12. GRB 120320A: Enhanced Swift-XRT position
  13. GRB 120320A: MASTER optical observations
  14. GRB 120320A: Swift detection of a burst

Advanced

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