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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').

16 results found.

  1. GRB 180325A: Global MASTER-Net OT prompt observations
  2. GRB 180314A: AstroSat CZTI detection
  3. Konus-Wind observation of GRB 180314A
  4. GRB 180314A: MITSuME Okayama optical upper limits
  5. GRB 180314A: Swift-BAT refined analysis
  6. GRB 180314A: TAROT La Silla observatory optical observations
  7. GRB 180314A: LCO Siding Springs observations
  8. GRB 180314A: Swift-XRT refined Analysis
  9. GRB 180314A: Fermi GBM observation
  10. GRB 180314A: VLT/X-shooter redshift
  11. GRB 180314A: Swift/UVOT Detection
  12. GRB 180314A: REM optical/NIR observations
  13. GRB 180314A: MASTER-Net OT dtetction
  14. GRB 180314A: Enhanced Swift-XRT position
  15. GRB180314A: GROND detection of the afterglow
  16. GRB 180314A: Swift detection of a burst with an optical counterpart


Download all Circulars as a .tar.gz archive:
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