论文标题
太阳样振荡对磁扰动的灵敏度的经验关系
Empirical Relations for the Sensitivities of Solar-like Oscillations to Magnetic Perturbations
论文作者
论文摘要
恒星的振荡模式频率通常被视为给定恒星模型的静态频率。但是，实际上，它们可能会因时间变化的来源（例如磁场和流量）而受到干扰。我们从主序列到早期的渐近巨型分支机构计算了一组0.7-3.0 m $ _ {\ odot} $的质量模型的径向P模式振荡的灵敏度。我们将这些模式敏感性与多项式拟合在基本恒星参数中，以实现恒星进化的六个阶段。我们发现，最合适的关系与文献中提出的关系和恒星进化阶段之间的变化不同。加上摄动的强度（例如，磁性活性水平）的量度，可以使用介绍的关系来评估恒星观察到的振荡频率是否可能接近未扰动的基态或是否应调整它们。
Oscillation mode frequencies of stars are typically treated as static for a given stellar model. However, in reality they can be perturbed by time varying sources such as magnetic fields and flows. We calculate the sensitivities of radial p-mode oscillations of a set of models for masses between 0.7-3.0 M$_{\odot}$ from the main sequence to the early asymptotic giant branch. We fit these mode sensitivities with polynomials in fundamental stellar parameters for six stages of stellar evolution. We find that the best-fitting relations differ from those proposed in the literature and change between stages of stellar evolution. Together with a measure of the strength of the perturbation, e.g., of the level of magnetic activity, the presented relations can be used for assessing whether a star's observed oscillation frequencies are likely to be close to the unperturbed ground state or whether they should be adjusted.
