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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 120816A: Swift/UVOT Detection of the Optical Afterglow
  2. GRB 120816A: optical upper limit
  3. GRB 120816A: Bassano Bresciano Observatory optical observations
  4. GRB 120816A: Swift-XRT refined Analysis
  5. GRB 120816A: Enhanced Swift-XRT position
  6. GRB 120816A: Swift-BAT refined analysis
  7. GRB 120816A: BOOTES-2 observations
  8. GRB120816A: OPTIMA discovery of optical counterpart
  9. GRB 120816A: TAROT Calern observatory optical observations
  10. GRB 120816A: ROTSE-III Optical Limits
  11. GRB 120816A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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