论文标题
积聚X射线脉冲星的极化。 I.一个新模型
Polarisation of Accreting X-ray Pulsars. I. A New Model
论文作者
论文摘要
一个新的窗口正在以高能天文学开放：X射线极化法。目前正在开发许多任务，并原定于2021年推出，因此很快就可以观察到积聚X射线脉冲星的X射线两极分化。由于极化对发射区域的几何形状尤其敏感，因此即将到来的极化器将为这些物体的发射机制提供新的启示，前提是我们具有与当前的光谱和时机观察一致的合理理论模型，并且可以预测发射的极化参数。在这里，我们提出了一个新模型，用于在积聚柱场景中产生X射线脉冲星的两极化发射，该模型首次考虑了增生区域的宏观结构和动力学以及对观察者的辐射传播，包括相对论的光束，引力，引力，引力，引力透镜和量子镜头电动力学。在本文中，我们介绍了模型的所有细节，而在同伴纸中，我们应用模型来预测明亮的X射线脉冲星赫拉克勒斯X-1的极化参数。
A new window is opening in high-energy astronomy: X-ray polarimetry. With many missions currently under development and scheduled to launch as early as 2021, observations of the X-ray polarisation of accreting X-ray pulsars will soon be available. As polarisation is particularly sensitive to the geometry of the emission region, the upcoming polarimeters will shed new light on the emission mechanism of these objects, provided that we have sound theoretical models that agree with current spectroscopic and timing observation and that can make predictions of the polarisation parameters of the emission. We here present a new model for the polarised emission of accreting X-ray pulsars in the accretion column scenario that for the first time takes into account the macroscopic structure and dynamics of the accretion region and the propagation of the radiation toward the observer, including relativistic beaming, gravitational lensing and quantum electrodynamics. In this paper we present all the details of the model, while in a companion paper, we apply our model to predict the polarisation parameters of the bright X-ray pulsar Hercules X-1.
