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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. GRB100807A: R band observations
  2. GRB 100807A: P200 Infrared Observations
  3. GRB100807A: optical observation in CrAO
  4. GRB100807A: MITSuME optical upper limits
  5. GRB 100807A: Swift XRT refined analysis
  6. GRB 100807A: P60 Optical Afterglow Discovery
  7. GRB 100807A: Swift/UVOT Upper Limits
  8. GRB 100807A: Enhanced Swift-XRT position
  9. GRB 100807A: Swift-BAT refined analysis
  10. GRB 100807A: ROTSE-III Optical Limits
  11. GRB 100807A: Swift detection of a burst

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