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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').

14 results found.

  1. VLA observation of GRB 070224
  2. GRB 070224: Optical afterglow confirmation
  3. GRB 070224: Swift/UVOT Upper Limits
  4. GRB070224: Magellan Imaging Observations
  5. GRB 070224: WHT K-band imaging
  6. GRB 070224: MDM Observations
  7. GRB 070224: SARA upper limit
  8. GRB070224: Swift-XRT Refined Analysis
  9. GRB 070224: optical afterglow candidate
  10. GRB 070224, Swift-BAT refined analysis
  11. GRB 070224: MASTER-Net refind analysis
  12. GRB 070224: MASTER-VWF-Kislovodsk observations
  13. GRB 070224: MASTER observations
  14. GRB 070224: Swift detection of a burst

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