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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').

13 results found.

  1. GRB 090519: Swift-XRT refined analysis
  2. GRB 090519: NOT refined analysis
  3. GRB 090519: VLT spectroscopic redshift
  4. GRB 090519: GROND observation
  5. GRB 090519: Swift/UVOT Upper Limits
  6. GRB 090519, Swift-BAT refined analysis
  7. GRB 090519: Enhanced Swift-XRT position
  8. GRB 090519: Limits from BOOTES-1B
  9. GRB 090519: NOT afterglow candidate
  10. GRB 090519: FARO Chante Perdrix Observatory optical observations
  11. GRB 090519: TAROT Calern observatory optical observations
  12. GRB 090519: Swift detection of a burst
  13. GRB050319: radio observation


Download all Circulars as a .tar.gz archive:
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