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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').

16 results found.

  1. GRB 180715A: 15 GHz upper limits from the AMI Short GRB Program
  2. GRB 180715A: CALET CAL gamma-ray analysis
  3. GRB 180715A: AstroSat CZTI detection
  4. GRB 180715A: MASTER optical observation
  5. GRB 180715A: Gemini imaging upper limits
  6. GRB 180715A: Swift/UVOT Upper Limits
  7. GRB 180715A: CALET Gamma-Ray Burst Monitor detection
  8. GRB 180715A: LCO Sutherland observations
  9. GRB 180715A: COATLI Optical Observations
  10. GRB 180715A: Swift-XRT observations
  11. GRB 180715A: Fermi GBM detection
  12. GRB 180715A: Swift-BAT refined analysis
  13. GRB 180715A: GOTO optical limits
  14. GRB 180715A: LCO Sutherland possible optical candidate
  15. GRB 180715A: Swift-XRT observations
  16. GRB 180715A: Swift detection of a short hard burst

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