Study of Roles of Magnetic Fields in Pulsations of roAp Stars

9414037 Zita是一种快速振荡的奇特A星，被称为roAp星，它的亮度以几分钟或几十分钟的周期呈现出小幅度的变化。虽然这种行为类似于在太阳中观察到的p模振荡，但肯定涉及不同的激发机制。圆周率指数表明，磁波动是一种很大的可能性。她已经证明了roAp恒星包层中的条件适合于这种机制。在这项研究计划拨款的支持下，她将建立所需的初始条件和边界条件，以模拟roAp恒星包层的动力学，并产生一些测试模型。***

9414037 Zita The rapidly oscillating peculiar A stars, known as roAp stars, exhibit small amplitude brightness variations with periods of minutes or tens of minutes. While this behavior is similar to the p-mode oscillations observed in the sun, a different excitation mechanism must be involved. The PI suggests that magnetic fluctuations are a strong possibility. She has shown that the conditions in the envelopes of the roAp stars are suitable for this mechanism. With the support of this Research Planning Grant she will establish the initial and boundary conditions needed to model the dynamics of the roAp star envelopes and produce some test models. ***