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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').

14 results found.

  1. GRB 200219A: AstroSat CZTI detection
  2. GRB 200219A: ATCA 5/9 GHz radio observations
  3. Konus-Wind observation of GRB 200219A
  4. GRB 200219A: Chandra rapid ToO upper limit
  5. GRB 200219A: UVOT Upper Limits
  6. GRB 200219A: FRAM-Auger optical limit
  7. GRB 200219A, Swift-BAT refined analysis
  8. GRB 200219A: Swift-XRT refined Analysis correction
  9. GRB 200219A: Swift-XRT refined Analysis
  10. GRB 200219A: Enhanced Swift-XRT position
  11. GRB 200219A: Fermi GBM observation
  12. GRB 200219A: MASTER catalog automatic possible Host Galaxy candidate
  13. GRB 200219A: Swift detection of a short burst
  14. GRB 200219A: Fermi GBM Final Real-time Localization


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