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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. Radio observation of GRB 090201 with ATCA
  2. Konus-Wind observation of GRB 090201
  3. GRB 090201: Swift-XRT refined analysis
  4. GRB090201: Swift UVOT upper limits
  5. GRB 090201: object inside the enhanced XRT error circle
  6. GRB 090201: Enhanced Swift-XRT position
  7. GRB 090201: VLT NIR observations
  8. GRB 090201: Swift-BAT refined analysis
  9. GRB 090201: VLT afterglow candidate
  10. GRB 090201: Swift-XRT detection of the possible X-ray afterglow
  11. GRB 090201: ROTSE-III Optical Limits
  12. GRB 090201: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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