A Parsec Scale Accelerating Radio Jet in the Giant Radio Galaxy NGC315

Details A Parsec Scale Accelerating Radio Jet in the Giant Radio Galaxy NGC315 A Parsec Scale Accelerating Radio Jet in the Giant Radio Galaxy NGC315

1999-02-03

arxiv.org/abs/astro-ph/9902053v1

Astronomy and Astrophysics

Astrophysics

24 pages with 8 figures. ApJ in press

Scientific paper

10.1086/307358

Observations of the core of the giant radio galaxy NGC315 made with VLBI interferometers are discussed in the context of a relativistic jet. The sidedness asymmetry suggests Doppler favoritism from a relativistic jet. The presence of moving features in the jet as well as jet counter--jet brightness ratios hint at an accelerating, relativistic jet. An increasing jet velocity is also supported by a comparison of the jet's observed properties with the predictions of an adiabatic expansion model. On the parsec scale, the jet is unpolarized at a wavelength of 6 cm to a very high degree in clear distinction to the high polarization seen on the kiloparsec scale.

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