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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').

13 results found.

  1. GRB 180805B: Teide LCO optical observations
  2. GRB 180805B: ESO/NTT optical observations
  3. GRB 180805B: COATLI Optical Observations
  4. GRB 180805B: 1.5m OSN I-band observation
  5. GRB 180805B: GOTO optical limits
  6. GRB 180805B: VLT optical and near-infrared observations
  7. GRB 180805B: MASTER optical late inspection short GRB with extended emission
  8. GRB 180805B: Swift-XRT refined Analysis
  9. GRB 180805B: Swift-BAT refined analysis (short GRB with extended emission)
  10. GRB 180805B: Swift/UVOT Upper Limits
  11. GRB 180805B: Fermi GBM detection
  12. GRB 180805B: Enhanced Swift-XRT position
  13. GRB 180805B: Swift detection of a burst

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