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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').

16 results found.

  1. GRB 230116D: 3.6m DOT optical upper limit
  2. GRB 230116D: Swift-BAT refined analysis
  3. GRB 230116D: SAO RAS further observations
  4. GRB 230116D: SAO RAS photometry
  5. GRB 230116D: KGO RC-25 optical observations
  6. GRB 230116D: Sintez-Newton/CrAO optical observations
  7. GRB 230116D: LCOGT Optical Upper Limit
  8. GRB 230116D: SAO RAS redshift
  9. GRB 230116D: Swift-XRT refined Analysis
  10. GRB 230116D: GIT optical follow-up
  11. GRB 230116D: GIT optical follow-up
  12. GRB 230116D: Enhanced Swift-XRT position
  13. GRB 230116D: SAO RAS observations of OT brightening
  14. GRB 230116D: Sintez-Newton/CrAO optical afterglow detection
  15. GRB 230116D: Nanshan/NEXT optical afterglow detection
  16. GRB 230116D: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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