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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').

5 results found.

  1. GRB 200416A: Swift/UVOT Detection
  2. GRB 200416A: Swift-BAT refined analysis
  3. GRB 200416A: Swift-XRT refined Analysis
  4. GRB 200416A: Fermi GBM observation
  5. GRB 200416A: Swift detection of a burst with an optical afterglow

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