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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 130604A: Swift-BAT refined analysis
  2. GRB 130604A: Swift/UVOT Upper Limits
  3. GRB 130604A: Swift-XRT refined Analysis
  4. GRB 130604A: Enhanced Swift-XRT position
  5. GRB 130604A: Gemini North Spectroscopy
  6. GRB 130604A: MITSuME Okayama upper limits
  7. GRB 130604A: further ISON-NM optical observation
  8. GRB 130604A: ISON-NM optical upper limit
  9. GRB 130604A: KAIT optical upper limit
  10. GRB 130604A: P60 optical afterglow candidate
  11. GRB 130604A: Swift detection of a burst

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