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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').

7 results found.

  1. GRB 200306A: Swift/UVOT Upper Limits
  2. GRB 200306A: Swift-BAT refined analysis
  3. GRB 200306A: RATIR Optical Observations
  4. GRB 200306A: AstroSat CZTI detection
  5. GRB 200306A: Swift-XRT refined Analysis
  6. GRB 200306A: Potential LCO Optical Afterglow Detection
  7. GRB 200306A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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