A transition from parabolic to conical shape as a common effect in nearby AGN jets

  title={A transition from parabolic to conical shape as a common effect in nearby AGN jets},
  author={Y. Y. Kovalev and A. Pushkarev and E. Nokhrina and A. Plavin and V. Beskin and A. Chernoglazov and M. Lister and T. Savolainen},
  journal={Monthly Notices of the Royal Astronomical Society},
  • Y. Y. Kovalev, A. Pushkarev, +5 authors T. Savolainen
  • Published 2019
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • Observational studies of collimation in jets in active galactic nuclei (AGN) are a key to understanding their formation and acceleration processes. We have performed an automated search for jet shape transitions in a sample of 367 AGN using VLBA data at 15 GHz and 1.4 GHz. This search has found ten out of 29 nearby jets at redshifts z<0.07 with a transition from a parabolic to conical shape, while the full analyzed sample is dominated by distant AGN with a typical z about 1. The ten AGN are… CONTINUE READING
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