论文标题
QPO来自强烈磁化的白色矮人的震后积聚柱
QPOs from post-shock accretion column of strongly magnetized accreting white dwarfs
论文作者
论文摘要
强烈磁化积聚的白色矮人（称为极性）的延伸磁层可防止积聚磁盘的形成，并将物质引导到磁极（S）。一些这样的来源在其光学曲线中显示了准周期性振荡。这些高频振荡被认为是从震后积聚柱中产生的。最终从该后冲击区域发出了积聚流的动能，并且所涉及的辐射过程决定了物质的状态。在这里，我们研究了这种积聚柱的结构和动力学特性，并将结果与观察特征进行比较。
An extended magnetosphere of a strongly magnetized accreting white dwarf (known as a polar) prevents the formation of an accretion disk and the matter is channelled to the magnetic pole(s). A few such sources show quasi-periodic oscillations in their optical light curves. These high-frequency oscillations are thought to be generated from the post-shock accretion column. The kinetic energy of the accretion flow is finally emitted from this post-shock region and the involved radiation processes decide the state of the matter. Here we study the structure and the dynamical properties of such accretion columns and compare the results with the observational characteristics.
