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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 070509: objects inside XRT error circle
  2. GRB 070509: Swift/UVOT Upper Limits
  3. GRB070509: Swift-XRT Refined Analysis
  4. GRB 070509, Swift-BAT refined analysis
  5. GRB 070509: REM observations
  6. GRB 070509: Swift detection of a burst
  7. GRB 070509: ROTSE-III Optical Limits

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Download all Circulars as a .tar.gz archive:
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