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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').

21 results found.

  1. GRB 050412: Chandra observations
  2. GRB 050412: Subaru observations
  3. GRB 050412: PROMPT VRcIc Observations
  4. GRB 050412: optical limit
  5. GRB 050412: optical observations
  6. GRB 050412: early Swift XRT analysis results
  7. GRB 050412 : XingLong optical observation
  8. GRB 050412: Swift-BAT refined analysis
  9. GRB 050412: ANU 2.3m observations
  10. GRB 050412: Early Optical/Ultraviolet Observations with
  11. GRB 050412: retraction of UVOT transient report
  12. GRB 050412: UVOT transient not in XRT error circle
  13. GRB 050412: Optical limit
  14. GRB 050412: LCO Optical Observations
  15. GRB 050412: Optical observations
  16. GRB 050412: Swift XRT Position
  17. GRB050412: optical limit before and during GRB
  18. GRB 050412: LCO optical observations
  19. Swift-BAT Detection of GRB 050412: A Bright, Long Burst
  20. GRB 050412: IR and Optical observations
  21. GRB 050412: IR Observations

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