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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').

10 results found.

  1. GRB 090628: Swift XRT refined analysis
  2. GRB 090628: Swift/UVOT Upper Limits
  3. GRB080628: SAO RAS optical observations
  4. GRB 090628: Swift-BAT refined analysis
  5. GRB 090628: GROND upper limits
  6. GRB 090628: Enhanced Swift-XRT position
  7. GRB 090628: 1.23m CAHA optical observations
  8. GRB 090628: Swift/UVOT Finding Chart Observation
  9. GRB 090628: Swift XRT position
  10. GRB 090628: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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