Magnetic-field configurations in compact extragalactic jets

Details Magnetic-field configurations in compact extragalactic jets Magnetic-field configurations in compact extragalactic jets

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cajph..64..463j&link_type=abstract

(Conference on Jets from Stars and Galaxies, Toronto, Canada, June 24-27, 1985) Canadian Journal of Physics (ISSN 0008-4204), vo

Astronomy and Astrophysics

Astronomy

4

Extragalactic Radio Sources, Magnetic Field Configurations, Radio Jets (Astronomy), Linear Polarization, Polarimetry, Relativistic Velocity, Turbulence, Very Long Base Interferometry

Scientific paper

Multifrequency and multitime polarimetry of active, compact radio sources strongly suggest that the magnetic-field structures in these sources are largely disordered or turbulent. Some initial, detailed model calculations of relativistic jets with turbulent fields have been performed in an effort to better understand the relationships between the observed polarization properties and physical structures of sources. Simulations are described involving nearly steady, isothermal, constant velocity jets with magnetic fields having approximately a Kolmogorov turbulence spectrum that is carried along the jet. They produce structures similar to those actually observed, including a core-jet appearance with superluminal knots. Likewise, the polarization has a behavior in frequency that is at least qualitatively similar to that observed. In addition, although individual portions of the model sources are highly polarized, as also seen with very long baseline interferometry, the integrated polarizations are relatively small, as observed.

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