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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').

12 results found.

  1. GRB 200711A: Insight-HXMT/HE detection
  2. GRB 200711A: CALET Gamma-Ray Burst Monitor detection
  3. GRB 200711A: AbAO optical upper limit
  4. GRB 200711A: Swift/UVOT Upper Limits
  5. GRB 200711A: Swift-BAT refined analysis
  6. GRB 200711A: Fermi-LAT marginal detection
  7. GRB 200711A: KAIT Optical Upper Limit
  8. GRB 200711A: Swift-XRT refined Analysis
  9. GRB 200711A: Fermi GBM detection
  10. Swift GRB 200711A: Global MASTER-Net observations report
  11. GRB 200711A: Swift detection of a burst
  12. GRB 200711A: Fermi GBM Final Real-time Localization


Download all Circulars as a .tar.gz archive:
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