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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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').

14 results found.

  1. GRB 090726 R band observations
  2. GRB 090726: Skynet/GORT Observations
  3. GRB 090726: optical observation
  4. GRB 090726: GRT Optical Observation
  5. GRB090726: Swift/UVOT observations
  6. GRB 090726, Swift-BAT refined analysis
  7. GRB 090726: Afterglow candidate photometryfrom Crni Vrh
  8. GRB 090726: D50 optical observations
  9. GRB 090726: Swift-XRT Team refined analysis
  10. GRB 090726: Enhanced Swift-XRT position
  11. GRB 090726: optical transient candidate
  12. GRB 090726: Swift/UVOT Finding Chart Observation
  13. GRB 090726: Swift-XRT position of probable counterpart
  14. GRB 090726: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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