论文标题
高度磁化中子星形的偏振辐射信号
Polarized Radiation Signals from Highly Magnetized Neutron Star Surfaces
论文作者
论文摘要
由于存在强磁场，因此中子恒星的表面可能是强偏光X射线的来源。表面层中的散射转运对于确定光强度的新兴各向异性至关重要，并且受线性和圆形极化信息之间复杂的相互作用的强烈影响。我们已经开发了一个磁性汤姆森散射模拟，以对这种紧凑的物体中完全离子大气的外层进行建模。在这里，我们总结了扩展的大气模拟的新兴强度和极化，涵盖了相当大的磁性结肠。完全包括从表面到无穷大的光的一般相对论传播。净极化程度是中等的，并且在各种场方向上总结时不是很小。这些结果为观察到NASA的新型IXPE X射线偏光仪和未来的X射线极化仪任务而获得的磁铁的观察为观察奠定了重要基础。
The surfaces of neutron stars are likely sources of strongly polarized soft X rays due to the presence of strong magnetic fields. Scattering transport in the surface layers is critical to the determination of the emergent anisotropy of light intensity, and is strongly influenced by the complicated interplay between linear and circular polarization information. We have developed a magnetic Thomson scattering simulation to model the outer layers of fully-ionized atmospheres in such compact objects. Here we summarize emergent intensities and polarizations from extended atmospheric simulations, spanning considerable ranges of magnetic colatitudes. General relativistic propagation of light from the surface to infinity is fully included. The net polarization degrees are moderate and not very small when summing over a variety of field directions. These results provide an important foundation for observations of magnetars to be acquired by NASA's new IXPE X-ray polarimeter and future X-ray polarimetry missions.
