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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').

26 results found.

  1. EP241101a NUTTelA-TAO / BSTI Measurements 2024-11-02
  2. GRB 241030B: NUTTelA-TAO / BSTI Optical Limits (duplicate submission of 38023)
  3. GRB 241030B: NUTTelA-TAO / BSTI Optical Limits
  4. GRB 240905E: NUTTelA-TAO / BSTI Optical Limits
  5. GRB 240825A: NUTTelA-TAO / BSTI Optical Limits
  6. GRB 240805B: NUTTelA-TAO / BSTI Optical Limits
  7. GRB 231205B: NUTTelA-TAO / BSTI Early Optical Limits
  8. GRB231111A: MDM 2.4m Hiltner Telescope Observation
  9. GRB 231111A NUTTelA-TAO / BSTI Early Measurements
  10. GRB 230506C: NUTTelA-TAO / BSTI Early Optical Limits
  11. GRB 230328B NUTTelA-TAO / BSTI Early Measurements
  12. GRB 230228A: NUTTelA-TAO / BSTI Optical Limits
  13. GRB 221028A: GRANDMA observations
  14. GRB 221028A: NUTTelA-TAO / BSTI Early Optical Limits
  15. GRB 221028A: NUTTelA-TAO / BSTI Early Optical Limits
  16. GRB 220711B: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  17. GRB 220403B: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  18. GRB 220118A: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  19. GRB 211221A: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  20. GRB 211023B: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  21. GRB 210820A: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
  22. GRB 201015A NUTTelA-TAO / BSTI Early Measurements (Preliminary)
  23. GRB 200925B NUTTelA-TAO / BSTI Early Measurements (Preliminary)
  24. LIGO/Virgo S190728q: ZTF19abjethn TShAO and NUTTelA-TAO optical observations / classification
  25. GRB 190627A: NUTTelA-TAO optical counterpart observations
  26. GRB 190627A: NUTTelA-TAO optical observations

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