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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. GRB 180305A: AstroSat CZTI detection
  2. GRB 180305A CALET Gamma-Ray Burst Monitor detection
  3. GRB 180305A: RATIR Optical Observations
  4. GRB 180305A: Swift/UVOT Upper Limits
  5. GRB 180305A: Mondy optical observations
  6. GRB 180305A: Swift-XRT afterglow detection
  7. Konus-Wind observation of GRB 180305A
  8. GRB 180305A: RATIR Optical Afterglow Candidate
  9. GRB 180305A: Swift ToO observations
  10. GRB 180305A: Fermi GBM detection
  11. GRB 180305A: Fermi-LAT detection

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