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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').

22 results found.

  1. BepiColombo MGNS joins the IPN
  2. GRB 200716C: Kitab optical observations
  3. GRB 200716C: CAHA optical observation // Anomalous light curve behavior?
  4. GRB 200716C: CrAO, Terskol, Assy-Turgen optical observations
  5. GRB 200716C: FRAM-ORM afterglow detection
  6. Konus-Wind observation of GRB 200716C: correction to GCN 28147
  7. Konus-Wind observation of GRB 200716C
  8. GRB 200716C: VIRT optical detection.
  9. GRB 200716C: Insight-HXMT/HE detection
  10. GRB 200716C: CALET Gamma-Ray Burst Monitor detection
  11. GRB 200716C: Optical observations from HCT
  12. GRB 200716C: Swift-BAT refined analysis
  13. GRB 200716C: Fermi GBM detection
  14. GRB 200716C: AGILE/MCAL detection
  15. GRB 200716C: possible host galaxy from the SDSS
  16. GRB 200716C: Swift-XRT refined analysis correction
  17. GRB 200716C: Fermi-LAT detection
  18. GRB 200716C: Swift-XRT refined Analysis
  19. GRB 200716C: Enhanced Swift-XRT position
  20. GRB200716C: BOOTES-1 optical afterglow detection
  21. GRB 200716C: Swift detection of a burst with an optical counterpart
  22. GRB 200716C: Fermi GBM Final Real-time Localization


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