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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').

6 results found.

  1. GRB 090419: Swift/UVOT Observations
  2. GRB 090419: Swift-XRT refined analysis
  3. GRB 090419: GROND detection of afterglow candidate
  4. GRB 090419: Swift-BAT refined analysis
  5. GRB 090419: Enhanced Swift-XRT position
  6. GRB 090419: Swift detection of a burst

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