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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').

17 results found.

  1. GRB 090529: CrAO optical upper limit
  2. GRB 090529: MTM-500 optical observations
  3. GRB 090529: Mt.Terskol optical observations
  4. GRB090529: Further NOT optical observations
  5. GRB 090529: MITSuME optical observation
  6. GRB 090529: VLT spectroscopic redshift
  7. GRB 090529: NOT optical observations
  8. GRB 090529: Swift-XRT refined analysis
  9. GRB 090529: OSN optical observations
  10. GRB 090529: optical observations
  11. GRB 090529: TLS Afterglow Observations
  12. GRB090529: UVOT/Swift detection of a brightening optical afterglow
  13. GRB 090529: Swift-BAT refined analysis
  14. GRB 090529: Enhanced Swift-XRT position
  15. GRB 090529: Preliminary Swift/UVOT Upper Limit
  16. GRB 090529: Xinglong TNT optical observation
  17. GRB 090529: Swift detection of a burst


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