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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 130502A: optical upper limit
  2. GRB 130502A: Swift-BAT refined analysis
  3. GRB 130502A: Swift-XRT refined Analysis
  4. GRB 130502A: Fermi GBM detection
  5. GRB 130502A: Swift/UVOT Upper Limits
  6. GRB 130502A: RATIR Optical and NIR Observations
  7. GRB 130502A: Enhanced Swift-XRT position
  8. GRB 130502A: OSN and IAC80 I-band observations
  9. GRB 130502A: z-band observations from GTC
  10. GRB 130502A: TNG candidate counterpart
  11. GRB 130502A: T100 Observations
  12. GRB 130502A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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