General relativistic polarized radiative transfer: building a dynamics–observations interface
General relativistic polarized radiative transfer: building a dynamics–observations interface
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DOI：
10.1111/j.1365-2966.2010.17502.x
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发表时间：
2010-07
影响因子：
4.8
通讯作者：
R. Shcherbakov;Lei Huang
中科院分区：
文献类型：
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作者：
R. Shcherbakov;Lei Huang
相对论性源的极化观测数量的增加需要一个正确的理论来进行适当的模型拟合。从玻尔兹曼方程和广义相对论的基本思想出发，导出了广义相对论偏振辐射传输方程。推导的目的是提供一个实用的指南，复制的同步辐射的无线电和亚毫米波发射的低光度活动星系核（LLAGNs），特别是Sgr A*，和喷流。给出了一种快速精确计算各向同性粒子分布的回旋同步辐射发射率、吸收率、法拉第旋转系数和转换系数的方法。众多的物理效应影响模拟光谱进行了讨论。应用这种方法对确定LLAGN中的黑洞自旋是必要的。总通量，线性和圆极化分数，以及电矢量位置角作为所观察到的频率的函数的观测可以基本上限制自旋的绝对值和方向。
The rising number of polarized observations of relativistic sources necessitates a correct theory for proper model fitting. The equations for general relativistic (GR) polarized radiative transfer are derived starting from the Boltzmann equation and basic ideas of general relativity. The derivation is aimed at providing a practical guide to reproducing the synchrotron part of radio and submillimetre emission from low-luminosity active galactic nuclei (LLAGNs), in particular Sgr A*, and jets. A recipe for the fast exact calculation of cyclo-synchrotron emissivities, absorptivities, Faraday rotation and conversion coefficients is given for isotropic particle distributions. The multitude of physical effects influencing simulated spectra is discussed. The application of the prescribed technique is necessary to determine the black hole spin in LLAGNs. The observations of total flux, linear and circular polarization fractions, and electric vector position angle as functions of the observed frequency could substantially constrain the absolute value and orientation of spin.