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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').
  1. GRB980329
  2. GRB980329 Keck K-band observations
  3. GRB980329 sub-millimeter observations
  4. GRB980329 IPN annulus
  5. GRB980329 optical observations
  6. GRB980329 near-IR observations
  7. GRB980329 near-IR observations
  8. GRB980329 optical observations
  9. GRB980329 infrared observations
  10. GRB980329 optical observations
  11. GRB980326 optical observations
  12. GRB980329 optical observations
  13. GRB980329 VLA observations
  14. GRB980329 near IR observations
  15. GRB980329 optical observations
  16. GRB980329 optical observations
  17. GRB980329 optical observations
  18. GRB980326 optical observations
  19. GRB980326 optical observations
  20. GRB980326 optical observations
  21. GRB980326 optical observations
  22. GRB970508 SAO RAS optical observations
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Download all Circulars as a .tar.gz archive:
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