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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').

11 results found.

  1. IceCube-181023A: HAWC follow-up
  2. IceCube-181023A: MASTER Net optical alert and follow up observations
  3. Search for counterparts to IceCube-181023A with IceCube
  4. Fermi-LAT Gamma-ray Observations of IceCube-181023A
  5. GRB 181023A: Swift-BAT refined analysis
  6. GRB 181023A: Swift/UVOT Upper Limits
  7. IceCube-181023A - IceCube observation of a high-energy neutrino candidate event
  8. GRB 181023A: Swift-XRT refined Analysis
  9. GRB 181023A: Enhanced Swift-XRT position
  10. GRB 181023A: KAIT Optical Upper Limit
  11. GRB 181023A: Swift detection of a burst

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