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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').

11 results found.

  1. GRB 190511A: Swift/UVOT further analysis
  2. Konus-Wind observation of GRB 190511A
  3. GRB 190511A: Swift-BAT refined analysis
  4. GRB 190511A: Swift-XRT refined Analysis
  5. GRB 190511A: Swift/UVOT Detection
  6. GRB 190511A: NOT optical afterglow
  7. GRB 190511A: Fermi-LAT detection
  8. GRB 190511A: Fermi GBM observation
  9. GRB 190511A: Enhanced Swift-XRT position
  10. GRB 190511A: Swift detection of a burst
  11. GRB 190511A: Fermi GBM Final Real-time Localization


Download all Circulars as a .tar.gz archive:
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