Helical magnetic field in AGN jets

Details Helical magnetic field in AGN jets Helical magnetic field in AGN jets

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004asthe..97..687a&link_type=abstract

The Astronomical Herald (ISSN 0374-2466), Vol. 97, No. 12, p. 687 - 693 (2004)

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Jets, Magnetic Fields

Scientific paper

In order to reveal 3D structure of a magnetic field in AGN jets, we analyzed archival data observed with VLBA polarimetry towards 3C 273 jet. We found a curious gradient with respect to the jet axis in the distribution of Faraday Rotation Measure. The distribution is well-explained by helical magnetic field, which is related to the formation and collimation mechanism of jets by magnetohydrodynamic models. With assuming MHD model, we can uniquely determine the direction of the disk rotation.

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