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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 131108A: VLA Observations
  2. GRB 131108A: ISON Blagoveshensk upper limit
  3. GRB 131108A: optical observations
  4. GRB 131108A: Continued RATIR Optical and NIR Observations
  5. Konus-Wind observation of GRB 131108A
  6. GRB 131108A: AGILE/GRID observation
  7. GRB 131108A: CARMA 3mm detection
  8. GRB 131108A: Fermi GBM observation
  9. GRB 131108A: Swift/UVOT Detection
  10. GRB 131108A: RATIR Optical and NIR Observations
  11. GRB 131108A: Swift-XRT observations
  12. GRB 131108A: TAROT-Calern optical observation
  13. GRB 131108A: Fermi-LAT refined analysis
  14. GRB 131108A: NOT optical observations
  15. GRB 131108A: Redshift from 10.4m GTC
  16. GRB 131108A: 1.23m CAHA optical candidate
  17. GRB 131108A: Swift detection of a possible X-ray afterglow
  18. IPN triangulation of GRB 131108A - correction
  19. IPN triangulation of GRB 131108A
  20. GRB 131108A Tiled Swift observations
  21. GRB 131108A: Fermi-LAT onboard detection of a burst


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