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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').

12 results found.

  1. GRB 150428A: late-time radio observations
  2. Konus-Wind observation of GRB 150428A
  3. GRB 150428A: Swift/UVOT Upper Limits
  4. GRB 150428A: MASTER-net early optical observation
  5. GRB 150428A: Swift-XRT refined Analysis
  6. GRB 150428A: Swift-BAT refined analysis
  7. GRB 150428A: Danish1.56m optical observations
  8. GRB 150428A: RATIR optical observations
  9. GRB 150428A: P60 observations
  10. GRB 150428A: Enhanced Swift-XRT position
  11. GRB 150428A: GROND Dark Burst Host Candidate
  12. GRB 150428A: Swift detection of a burst

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