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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').

13 results found.

  1. GRB 150211A: ROTSE-III Upper Optical Limit
  2. Konus-Wind observation of GRB 150211A
  3. GRB 150211A iTelescope observation
  4. GRB 150211A: Swift/UVOT Upper Limits
  5. GRB 150211A: Swift-BAT refined analysis
  6. GRB 150211A: KAIT Optical Upper Limit
  7. GRB 150211A: Mondy optical upper limit
  8. GRB 150211A: Swift-XRT refined Analysis
  9. GRB 150211A: RATIR Optical and NIR Observations
  10. GRB 150211A: No afterglow detection in the Swift/UVOT initial observation
  11. GRB 150211A: Swift-XRT observations
  12. GRB 150211A: Swift detection of a burst
  13. GRB 150211A: MASTER early optical observations


Download all Circulars as a .tar.gz archive:
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