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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. GRB 140919A, Swift-BAT refined analysis
  2. GRB 140919A: Swift-XRT refined Analysis
  3. GRB 140919A: Swift/UVOT Detection
  4. GRB 140919A: GROND afterglow candidate
  5. GRB 140919A: Fermi GBM observation
  6. GRB 140919A: Enhanced Swift-XRT position
  7. GRB 140919A: Swift/UVOT observations
  8. GRB 140919A: Swift-XRT observations
  9. GRB 140919A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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