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AGN dusty plasma polarization features

Published online by Cambridge University Press:  24 March 2015

Ericson D. Lopez
Observatorio Astronómico de Quito/Escuela Politécnica Nacional, Interior del Parque La Alameda, Av. Gran Colombia s/n, 17-01-165, Quito, Ecuador email: Space Telescope Science Institute 3700 San Martin Dr., Baltimore, MD 21218, USA email:
Susana Deustua
Space Telescope Science Institute 3700 San Martin Dr., Baltimore, MD 21218, USA email:
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We present the results of a theoretical study on the influence of dust particles on the polarization properties of the radiation that propagates along the jet in AGNs. First, a model for describing the interaction of dust particles, in addition to the electrons and ions, with electromagnetic radiation in a magneto-active plasma has been developed. From here, the contribution of dust particles to the Faraday rotation of the plane of polarization of the electric vector can be deduced. This model is evaluated for the outer region of the jet where the presence of dust particles are assumed, the magnetic field is weak and the electron density is low. Our results show that the dust particles give a significant contribution to the linear Faraday rotation measure.

Contributed Papers
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