标题： 对LMC X-3的热谱进行吸积盘模型测试 显示英文标题

标题： Testing slim-disk models on the thermal spectra of LMC X-3

摘要： Slim-disk 模型描述高光度下的吸积流，在低光度极限下会退化为标准薄盘形式。 我们在 XSPEC 的框架内开发了一个新的光谱模型 slimbb，该模型描述了完全相对论性的 slim-disk 吸积，并包括从盘光球层开始的光子射线追踪，而不是从赤道平面开始。 我们通过将该模型应用于持续黑洞 X 射线双星 LMC X-3 的 RXTE 光谱来展示该模型的特性。 LMC X-3 具有在保持软谱态的同时表现出大强度变化的优点，这些软谱态可以用吸积盘模型很好地描述，使其成为测试 slimbb 适用性的理想候选对象。 我们的结果表明低光度（薄盘）和高光度（slim-disk）区域之间的一致性。 我们还表明，在高吸积率区域进行 X 射线连续谱拟合可以有力地检验黑洞吸积盘模型。 显示英文摘要

摘要： Slim-disk models describe accretion flows at high luminosities, while reducing to the standard thin disk form in the low luminosity limit. We have developed a new spectral model, slimbb, within the framework of XSPEC, which describes fully relativistic slim-disk accretion and includes photon ray-tracing that starts from the disk photosphere, rather than the equatorial plane. We demonstrate the features of this model by applying it to RXTE spectra of the persistent black-hole X-ray binary LMC X-3. LMC X-3 has the virtues of exhibiting large intensity variations while maintaining itself in soft spectral states which are well described using accretion-disk models, making it an ideal candidate to test the aptness of slimbb. Our results demonstrate consistency between the low-luminosity (thin-disk) and high luminosity (slim-disk) regimes. We also show that X-ray continuum-fitting in the high accretion rate regime can powerfully test black-hole accretion disk models.