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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').

15 results found.

  1. GRB 110921A: optical observations in Maidanak observatory
  2. GRB 110921A: optical observations
  3. GRB 110921A: MITSuME-Akeno Optical photometry
  4. GRB 110921A: Swift/UVOT Observations
  5. GRB 110921A: NOT observations
  6. GRB 110921A: Fermi GBM observation
  7. GRB 110921A: TNT astrometry
  8. GRB 110921A: Swift-XRT refined Analysis
  9. GRB 110921A, Swift-BAT refined analysis
  10. GRB 110921A: optical observations in Mt. Terskol and Maidanak observatories
  11. GRB 110921A: Enhanced Swift-XRT position
  12. GRB 110921A: MITSuME Akeno Optical Observation
  13. GRB 110921A : TNT optical counterpart candidate
  14. GRB 110921A: MASTER-Net early limit
  15. GRB 110921A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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