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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').

9 results found.

  1. GRB 120521A: ATCA 34GHz upper limit
  2. GRB 120521A: GROND Upper limits
  3. GRB 120521A: XRT light curve (Correction to GCN 13326)
  4. GRB 120521A: Swift-XRT refined Analysis
  5. GRB 120521A: Swift/UVOT Upper Limits
  6. GRB 120521A: Swift-BAT refined analysis
  7. GRB 120521A: Enhanced Swift-XRT position
  8. GRB 120521A: TAROT La Silla observatory optical observations
  9. GRB 120521A: Swift detection of a short burst


Download all Circulars as a .tar.gz archive:
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