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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').

12 results found.

  1. GRB 130822A: nearby galaxy redshifts
  2. GRB 130822A: optical upper limits
  3. GRB 130822A Swift-BAT Spectral lag analysis
  4. GRB 130822A: 5.8 GHz VLA upper limit
  5. GRB 130822A: Gemini Observations
  6. GRB 130822A: Swift-XRT refined Analysis
  7. GRB 130822A: WHT ACAM observations
  8. GRB 130822A: Swift/UVOT Upper Limits
  9. GRB 130822A: Enhanced Swift-XRT position
  10. GRB 130822A, Swift-BAT refined analysis
  11. GRB 130822A: Weihai optical upper limit
  12. GRB 130822A: Swift detection of a short burst

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