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GCN at AAS 245, Legacy Circulars Address Retirement. See news and announcements

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').

10 results found.

  1. GRB 150831A: 9.8 GHz VLA upper limits
  2. Konus-Wind observation of GRB 150831A
  3. GRB 150831A: GROND Upper Limits
  4. GRB 150831A: Swift/UVOT Upper Limits
  5. GRB 150831A: Swift-XRT refined Analysis
  6. GRB 150831A: Swift-BAT refined analysis
  7. GRB 150831A: Enhanced Swift-XRT position
  8. GRB 150831A: optical upper limit ISON-SSO
  9. INTEGRAL detection of GRB 150831A
  10. GRB 150831A: Swift detection of a short burst

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