Cosmological magnetic fields
Cosmological magnetic fields
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DOI：
10.1007/s12043-000-0167-1
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发表时间：
2000-07
期刊：
影响因子：
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通讯作者：
R. Maartens
中科院分区：
文献类型：
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作者：
R. Maartens
磁场不仅在恒星中观察到，而且在星系、星系团甚至高红移的Lyman-α系统中也能观察到。从原理上讲，这些场在宇宙微波背景辐射(CMB)的结构形成中起着重要的作用，同时也影响着宇宙微波背景辐射的各向异性。宇宙磁场的研究不仅是为了量化这些对大尺度结构和CMB的影响，而且也是为了回答现代宇宙学的一个突出难题：磁场是何时以及如何产生的？它们要么是原始的，即在结构形成开始之前产生的，要么是在结构形成过程本身产生的。
Magnetic fields are observed not only in stars, but in galaxies, clusters, and even high redshift Lyman-α systems. In principle, these fields could play an important role in structure formation and also affect the anisotropies in the cosmic microwave background radiation (CMB). The study of cosmological magnetic fields aims not only to quantify these effects on large-scale structure and the CMB, but also to answer one of the outstanding puzzles of modern cosmology: when and how do magnetic fields originate? They are either primoridial, i.e. created before the onset of structure formation, or they are generated during the process of structure formation itself.