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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"

17 results found.

  1. GRB 101219A: Gemini-North host redshift
  2. GRB 101219A: Chandra Observations
  3. GRB 101219A: MITSuME Ishigakijima Optical upper limits
  4. GRB 101219A: IAC80 optical observations
  5. GRB 101219A: Swift-XRT refined Analysis
  6. GRB 101219A: Swift/UVOT Upper Limits
  7. GRB 101219A: GROND Upper limits
  8. Konus-Wind observation of short hard GRB 101219A
  9. GRB 101219A: Magellan NIR observations
  10. GRB 101219A: Further Gemini-South Imaging
  11. GRB 101219A: Swift-BAT refined analysis
  12. GRB 101219A - NOT observation - upper limit
  13. GRB 101219A: SARA-N Upper Limit
  14. GRB 101219A: Gemini-South observations
  15. GRB 101219A: REM optical and NIR observations
  16. GRB 101219A: ROTSE-III Optical Limits
  17. GRB 101219A: Swift detection of a short hard burst

Advanced

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