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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 170205A: Swift/UVOT Detection of a Fading Afterglow
  2. Konus-Wind observation of GRB 170205A
  3. GRB 170205A: Swift-BAT refined analysis
  4. GRB 170205A: NOT afterglow observations
  5. GRB 170205A: Swift-XRT refined Analysis
  6. GRB 170205A: Enhanced Swift-XRT position
  7. GRB 170205A: RATIR Optical and NIR Observations
  8. GRB 170205A: LCO FTN observations
  9. GRB 170205A: Swift detection of a burst with an optical counterpart


Download all Circulars as a .tar.gz archive:
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