Beaming and precession in the inner jet of 3C 273

Details Beaming and precession in the inner jet of 3C 273 Beaming and precession in the inner jet of 3C 273

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...344...61a&link_type=abstract

Astronomy and Astrophysics, v.344, p.61-67 (1999)

Astronomy and Astrophysics

Astrophysics

46

Galaxies: Jets, Galaxies: Quasars: Individual: 3C 273, Gamma Rays: Theory, Radio Continuum: Galaxies

Scientific paper

We have investigated the effects of precession in the inner jet of 3C 273 on its beaming properties and high energy emission. We have used all available VLBI data to determine the kinematic evolution of the jet. The position angles, velocities and formation epochs of different superluminal components are consistent with a precessing inner jet. The time-dependence of the Doppler factor for this jet was computed and the implications for the gamma -ray emission are discussed. Additionally, the model, when considered along with simultaneous radio and X-ray variability observations, provides an upper bound to the possible values of the Hubble constant (H_0<80 km s(-1) Mpc(-1) ).

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