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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. GRB 141031B: TShAO optical observations
  2. GRB 141031B: RATIR Optical and NIR Observation
  3. GRB 141031B: Swift/UVOT Upper Limits
  4. GRB 141031B: Swift-XRT refined Analysis
  5. GRB 141031B: Bassano Bresciano Observatory upper limit
  6. GRB 141031B: NOT optical observations
  7. GRB 141031B: MITSuME Ishigakijima upper limits
  8. GRB 141031B: Swift-BAT refined analysis
  9. GRB 141031B: Enhanced Swift-XRT position
  10. GRB 141031B: TShAO optical upper limit
  11. GRB 141031B: 1.23m CAHA I-band observations
  12. GRB 141031B: Nanshan optical upper limit
  13. GRB 141031B: MASTER early optical observations
  14. GRB 141031B: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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