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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 140817A: NOT optical observations
  2. GRB 140817A: Khureltogot optical upper limit
  3. GRB 140817A: Swift/UVOT Afterglow Detection
  4. Konus-Wind observation of GRB 140817A
  5. GRB 140817A: Swift-XRT refined Analysis
  6. GRB 140817A: Fermi GBM Detection
  7. GRB 140817A: Swift-BAT refined analysis
  8. GRB 140817A draft circular on nearby galaxy
  9. GRB 140817A: Enhanced Swift-XRT position
  10. GRB 140817A: Swift-XRT position
  11. GRB 140817A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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