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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').

12 results found.

  1. GRB 161022A: 15 GHz upper limits from AMI
  2. GRB 161022A: Swift-BAT refined analysis
  3. GRB 161022A: RATIR Optical and NIR Observations
  4. GRB 161022A: Swift/UVOT Upper Limits
  5. GRB 161022A: Fermi GBM observation
  6. GRB 161022A: NOT optical observations
  7. GRB 161022A: Enhanced Swift-XRT position
  8. GRB 161022A: Swift-XRT refined Analysis
  9. GRB 161022A: LT observations
  10. GRB 161022A: TAROT Calern observatory optical observations
  11. GRB 161022A: Prompt enhanced Swift-XRT position
  12. GRB 161022A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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