Frequency and Time Dependence of Linear Polarization in Turbulent Jets of Blazars

Alan P. Marscher; Svetlana G. Jorstad

Frequency and Time Dependence of Linear Polarization in Turbulent Jets of Blazars

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arxiv 2105.00094 v1 pith:HA3YFHGU submitted 2021-04-30 astro-ph.HE

Alan P. Marscher , Svetlana G. Jorstad This is my paper · ORCID

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Time-variable polarization is an extremely valuable observational tool to probe the dynamical physical conditions of blazar jets. Since 2008, we have been monitoring the flux and linear polarization of a sample of gamma-ray bright blazars at optical frequencies. Some of the observations were performed on nightly or intra-night time-scales in four optical bands, providing information on the frequency and time dependence of the polarization. The observed behavior is similar to that found in simulations of turbulent plasma in a relativistic jet that contains a standing shock and/or a helical background magnetic field. Similar simulations predict the characteristics of X-ray synchrotron polarization of blazars that will be measured in the future by the Imaging X-ray Polarimetry Explorer (IXPE).

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Polarization of synchrotron radiation from blazar jets
astro-ph.HE 2024-11 accept novelty 6.0 of 10

For axisymmetric jets viewed nearly on-axis, synchrotron polarization degree grows strongly with electron spectral index while the polarization angle stays nearly fixed, explaining observed optical-to-X-ray polarizati...

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