The Origin of the Magnetic Fields of the Universe
The Origin of the Magnetic Fields of the Universe
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宇宙磁场的起源
DOI：
10.1063/1.1351827
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发表时间：
2000
影响因子：
1.3
通讯作者：
V. Pariev
中科院分区：
文献类型：
--
作者：
S. Colgate;Hui Li;V. Pariev
对星系团内活动星系核（AGN）的法拉第旋转测量图的解释揭示了有序或相干的区域，Lmag <$50 −100 kpc（103 ×1023 cm），其中充满了巨大的1030 μG磁场。这些相干区域的磁能为Lmag 3（B2/8π）<$1059 −60尔格，而整个星系团的总磁能（跨越101 Mpc）预计会更大。了解这些磁场的起源和作用是等离子体天体物理学的一个重大挑战。一系列的物理过程，负责这些磁场的生产，重新分配和耗散的建议。这些磁场与星系团内的单个活动星系核有关，因此与活动星系核（活动星系核或类星体）阶段的所有星系有关，这仅仅是因为只有在活动星系核阶段形成的中心超大质量黑洞（108 M）才有一个可获得的形成能，1061尔格，可以解释磁场能量预算。一个α...
The interpretation of Faraday rotation measure maps of active galactic nuclei (AGNs) within galaxy clusters has revealed ordered or coherent regions, Lmag∼50−100 kpc (∼3×1023 cm), that are populated with large, ∼30 μG magnetic fields. The magnetic energy of these coherent regions is Lmag3(B2/8π)∼1059−60 ergs, and the total magnetic energy over the whole cluster (∼1 Mpc across) is expected to be even larger. Understanding the origin and role of these magnetic fields is a major challenge to plasma astrophysics. A sequence of physical processes that are responsible for the production, redistribution, and dissipation of these magnetic fields is proposed. These fields are associated with single AGNs within the cluster and therefore with all galaxies during their AGN (active galactic nucleus or quasar) phase, simply because only the central supermassive black holes (∼108M⊙) formed during the AGN phase have an accessible energy of formation, ∼1061 ergs, that can account for the magnetic field energy budget. An α...