论文标题
通过波驱动动量交换的磁化
Magnetogenesis by Wave-Driven Momentum Exchange
论文作者
论文摘要
当多种物种与静电离子声波相互作用时，尽管田间本身缺乏动力，但它们仍可以交换动量。电子上产生的力可以具有卷曲，从而在磁性水动力学时间尺度上产生卷曲的补偿电场。结果，可以生成磁场。令人惊讶的是，在某些天体物理环境中，这种机制可以播种具有比传统的Biermann电池更大的增长率的磁场。
When multiple species interact with an electrostatic ion acoustic wave, they can exchange momentum, despite the lack of momentum in the field itself. The resulting force on the electrons can have a curl, and thus give rise to compensating electric fields with curl on magnetohydrodynamic timescales. As a result, a magnetic field can be generated. Surprisingly, in some astrophysical settings, this mechanism can seed magnetic fields with growth rates even larger than through the traditional Biermann battery.
