关于磁化冕的一点注记
A note on magnetized coronae
摘要：
X射线双星和活动星系核显示了磁化热等离子体的观测证据。尽管有多年的数据，对这些{ \it冠}知之甚少，特别是对它们加热的机制，大多数模型只是假设它们的存在。然而，了解它的性质已经成为活动星系核和微类星体建模的关键问题。在这里，我们认为一个强大的垂直磁场对日冕活动星系核和X射线双星的影响，并表明其建模（结构，加热）必须重新考虑。作为第一步，我们提出了一种可以从吸积盘中提取能量并将其存储在日冕中的机制：{ \it磁泵
英文摘要：
X-ray binaries and AGN show observational evidence for magnetized hot plasmas. Despite years of data, very little is known on these {\it coronae} especially on the mechanisms responsible for their heating, and most models simply assume their existence. However, understanding its properties has now become a key issue of the AGN and microquasars modelling. Here we consider the effect of a strong vertical magnetic field on the corona AGN and X-ray binaries and show that its modeling (structure, heating) must be reconsidered. As a first step, we present one mechanism that could extract energy from the accretion disks and deposits it in the coronae: the {\it magnetic pumping
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