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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').

21 results found.

  1. GRB 150323C: CrAO optical observations
  2. GRB 150323C: additional optical observations in Mondy
  3. GRB 150323C: Khureltogot optical observations
  4. GRB 150323C: possible host galaxy detection
  5. GRB 150323C: Nishi-Harima NIR Observations
  6. GRB 150323C: MITSuME Akeno Optical observation
  7. Subject: GRB 150323C; Konkoly optical observations
  8. GRB 150323C: Mondy optical observations
  9. GRB 150323C, Swift-BAT refined analysis
  10. GRB 150323C: RATIR Optical Afterglow Observations - Errata
  11. GRB 150323C: Swift/UVOT Upper Limits
  12. GRB 150323C: Enhanced Swift-XRT position
  13. GRB 150323C: RATIR Optical Afterglow Observations
  14. GRB 150323C : Xinglong TNT optical observation
  15. GRB 150323C: Swift-XRT refined Analysis
  16. GRB 150323C: Xingming upper limit
  17. GRB150323C: Fermi GBM detection
  18. GRB 150323C: Nanshan optical afterglow detection
  19. GRB 150323C: Prompt enhanced Swift-XRT position
  20. GRB 150323C: MASTER-net optical observation
  21. GRB 150323C: Swift detection of a burst


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