利用同步偏振辐射统计测量磁化强度  

Measure magnetization using synchrotron polarization radiation statistics

作　　者：刘棒棒 王如月 LIU Bangbang;WANG Ruyue(Department of Physics and Optoelectronics,Xiangtan University,Xiangtan Hunan 411105)

机构地区：[1]湘潭大学物理与光电工程学院,湖南湘潭411105

出　　处：《首都师范大学学报（自然科学版）》2023年第1期17-20,27,共5页Journal of Capital Normal University：Natural Science Edition

基　　金：湘潭大学研究生科研创新项目(XDCX2022Y071)。

摘　　要：星际磁场在天体物理中具有重要作用,但测量其强度是极其困难的。本文基于同步偏振辐射理论开发了测量磁化强度的新技术,建立了同步偏振辐射强度的标准差和平均值的比值与阿尔文马赫数的幂律关系。此外,该技术也应用于Planck观测数据,实现了磁化强度的测量。The magnetic fields in the interstellar medium play an important role in astrophysics,but measuring the magnetization is extremely difficult. Based on the theory of synchrotron polarization radiation,a new technique for measuring magnetization is developed,and the power-law relation between the ratio of standard deviation and mean of synchrotron polarized radiation intensity and Alfvénic Mach number is established. Furthermore,the technique is also applied to Planck observation data to realize the measurement of magnetization.

关 键 词：磁流体动力学湍流 同步偏振辐射 磁化强度 

分 类 号：P142.9[天文地球—天体物理]