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

被引：37

作者：

Marscher, Alan P. ^{[1
]}

Jorstad, Svetlana G. ^{[1
,2
]}

机构：

[1] Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA

[2] St Petersburg State Univ, Astron Inst, Univ Sky Prospekt 28, St Petersburg 198504, Russia

来源：

GALAXIES | 2021年 / 9卷 / 02期

基金：

美国国家科学基金会;

关键词：

galaxies; active; jets; quasars; general; BL Lacertae objects; ACTIVE GALACTIC NUCLEI; RELATIVISTIC JETS; RADIO-SOURCES; INNER JET; X-RAY; ACCELERATION; PLASMA; INTERMITTENCY; FLUCTUATIONS; VARIABILITY;

D O I：

10.3390/galaxies9020027

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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).

引用

页数：17

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