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Observing Interstellar and Intergalactic Magnetic Fields
Annual Review of Astronomy and Astrophysics ( IF 33.3 ) Pub Date : 2017-08-18 , DOI: 10.1146/annurev-astro-091916-055221
J.L. Han 1, 2
Affiliation  

Observational results of interstellar and intergalactic magnetic fields are reviewed, including the fields in supernova remnants and loops, interstellar filaments and clouds, Hii regions and bubbles, the Milky Way and nearby galaxies, galaxy clusters, and the cosmic web. A variety of approaches are used to investigate these fields. The orientations of magnetic fields in interstellar filaments and molecular clouds are traced by polarized thermal dust emission and starlight polarization. The field strengths and directions along the line of sight in dense clouds and cores are measured by Zeeman splitting of emission or absorption lines. The large-scale magnetic fields in the Milky Way have been best probed by Faraday rotation measures of a large number of pulsars and extragalactic radio sources. The coherent Galactic magnetic fields are found to follow the spiral arms and have their direction reversals in arms and interarm regions in the disk. The azimuthal fields in the halo reverse their directions below a...

中文翻译:

观察星际和星系际磁场

综述了星际和星际磁场的观测结果,包括超新星遗迹和环、星际丝和云、Hii区域和气泡、银河系和附近星系、星系团和宇宙网中的场。使用多种方法来研究这些领域。星际细丝和分子云中磁场的方向是通过极化热尘埃发射和星光极化来追踪的。密集云和核心中沿视线的场强和方向是通过发射或吸收线的塞曼分裂来测量的。银河系中的大规模磁场最好通过大量脉冲星和河外射电源的法拉第自转测量来探测。发现相干的银河磁场跟随旋臂,并且在盘中的臂和臂间区域具有方向反转。光晕中的方位角场在一个…
更新日期:2017-08-18
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