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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').

10 results found.

  1. Correction to the title of Swift GCN 19051
  2. GRB 160220B: Further GROND Observations
  3. Further Swift/UVOT observations of GRB 160220B
  4. Konus-Wind observation of GRB 160220B
  5. GRB 160220B: Swift-BAT refined analysis
  6. GRB 160220B: GROND Observations
  7. GRB160220B: Swift/UVOT observations
  8. GRB 160220B: Swift-XRT refined Analysis
  9. Swift Trigger 674752 is likely a noise fluctuation in the direction of IGR17488-3253
  10. GRB 160220B: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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