论文标题
电子峰值对在ULX中增生柱的最大可能发光度的重要性
Importance of electron-positron pairs on the maximum possible luminosity of the accretion columns in ULXs
论文作者
论文摘要
Mushtukov等人建议了解释脉冲超光源X射线源（PULX）高光度的模型之一。 （2015）。他们表明，由于高磁场的不透明度降低，高度磁中子恒星表面上的积聚柱可能非常发光。然而，强磁场也导致电子旋律对创建的扩增。因此，电子和正电子数密度的增加补偿了横截面的降低，并且电子散射不透明度不会随着磁场放大而减小。结果，积聚柱的最大可能发光度不会随磁场而增加。它的范围在10 $^{40} -10^{41} $ erg s $^{ - 1} $之间，仅略微取决于磁场强度。
One of the models explaining the high luminosity of pulsing ultra-luminous X-ray sources (pULXs) was suggested by Mushtukov et al. (2015). They showed that the accretion columns on the surfaces of highly magnetized neutron stars can be very luminous due to opacity reduction in the high magnetic field. However, a strong magnetic field leads also to amplification of the electron-positron pairs creation. Therefore, increasing of the electron and positron number densities compensates the cross-section reduction, and the electron scattering opacity does not decrease with the magnetic field magnification. As a result, the maximum possible luminosity of the accretion column does not increase with the magnetic field. It ranges between 10$^{40} - 10^{41}$ erg s$^{-1}$ depending only slightly on the magnetic field strength.
