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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').

9 results found.

  1. Konus-Wind detection of GRB 210514A
  2. GRB 210514A: CALET Gamma-Ray Burst Monitor detection
  3. GRB 210514A: Swift/UVOT Upper Limits
  4. GRB 210514A: Swift-BAT refined analysis
  5. GRB 210514A: Swift XRT light curve is fading
  6. GRB 210514A: Swift-XRT refined Analysis
  7. GRB 210514A: Enhanced Swift-XRT position
  8. GRB 210514A: update on the BAT trigger time and burst duration
  9. GRB 210514A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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