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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').

6 results found.

  1. GRB041223: decay of the afterglow
  2. GRB 041223: XRT afterglow spectrum and light curve
  3. GRB 041223 Fluence measured by Swift-BAT
  4. GRB041223: optical and NIR observations with REM
  5. GRB 041223: J-band observations of the afterglow
  6. GRB 041223: Detection of Optical Transient with LCO40


Download all Circulars as a .tar.gz archive:
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