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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').

9 results found.

  1. GRB 121028A: Swift/UVOT Upper Limits
  2. GRB 121028A: near-IR observations at Calar Alto
  3. GRB 121028A: RAPTOR Limits During Gamma-Ray Emitting Interval
  4. GRB 121028A: Swift-XRT refined Analysis
  5. GRB 121028A: Enhanced Swift-XRT position
  6. GRB 121028A: Swift-BAT refined analysis
  7. GRB 121028A: MITSuME Okayama Optical upper limits
  8. GRB 121028A: Faulkes Telescope North observations
  9. GRB 121028A: Swift detection of a burst

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