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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').

8 results found.

  1. GRB 190103B: Swift/UVOT Upper Limits
  2. GRB 190103B: CALET Gamma-Ray Burst Monitor detection
  3. Konus-Wind observation of GRB 190103B
  4. GRB 190103B: Bassano Bresciano observatory upper limit
  5. GRB 190103B: Swift-BAT refined analysis
  6. GRB 190103B: Swift-XRT refined Analysis
  7. GRB 190103B: Enhanced Swift-XRT position
  8. GRB 190103B: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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