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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"

15 results found.

  1. GRB 111123A: Keck-I host detection and VLT/X-shooter redshift
  2. GRB 111210A: MITSuME Okayama Optical upper limits
  3. GRB 111123A: optical upper limit in CrAO: correction to the GCN circ. 12613
  4. GRB 111123A: optical upper limit in CrAO
  5. GRB 111123A, Swift-BAT refined analysis
  6. GRB 111123A: Swift/UVOT Upper Limits
  7. GRB 111123A - NOT optical observations
  8. GRB 111123A, GROND observations
  9. GRB 111123A: correction to GCN 12593
  10. GRB 111123A: TNG NIR detection of the afterglow candidate
  11. GRB 111123A: Swift-XRT refined Analysis
  12. GRB 111123A: MITSuME Okayama Optical upper limits
  13. GRB 111123A: Enhanced Swift-XRT position
  14. GRB 111123A: GMG optical observation
  15. GRB 111123A: Swift detection of a burst

Advanced

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