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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').

20 results found.

  1. Konus-Wind detection of GRB 210619B
  2. Konus-Wind observation of exceptionally bright GRB 140219A
  3. Konus-Wind observation of GRB 130427A
  4. GRB 110918A: Optical light curve for days 1.4 to 16.3
  5. GRB110918A: Lick Observations
  6. GRB 110918A: Liverpool Telescope optical observations
  7. GRB 110918A: submm observations from APEX
  8. GRB 110918A: Swift-XRT refined Analysis
  9. GRB 110918A: Spectroscopy from GTC
  10. GRB 110918A: Swift/UVOT Detection of the Optical Counterpart
  11. GRB 110918A: rest-frame energetics in gamma-gays
  12. GRB 110918A optical observation
  13. GRB 110918A: Gemini-N redshift
  14. GRB 110918A: Afterglow Confirmation from PTF
  15. GRB 110918A: GROND detection of the afterglow candidate
  16. GRB 110918A: INT optical detection of Swift candidate afterglow
  17. GRB 110918A: Swift-XRT observations
  18. GRB 110918A: pseudo-z= from prompt emission spectrum
  19. Konus-Wind observation of GRB 110918A
  20. IPN triangulation of GRB 110918A (long duration, extremely intense)


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