论文标题

浮肿的积聚光谱:Kynbb Fit

Spectra of Puffy Accretion Discs: the kynbb Fit

论文作者

Lančová, Debora, Yilmaz, Anastasiya, Wielgus, Maciek, Dovčiak, Michal, Straub, Odele, Török, Gabriel

论文摘要

蓬松的盘是一种数值模型,预计将捕获发光,轻度亚丁顿州X射线黑洞二进制中积聚流的性能。我们将XSPEC中的Kerrbb和Kynbb光谱模型与一般相对论的辐射磁性水力动力学模拟获得的浮肿积聚盘合成光谱,以查看它们是否正确恢复了在数值模拟中假定的黑洞旋转和质量吸积率。我们得出的结论是,这两个模型都无法正确解释浮肿的圆盘参数,这突出了开发新的,更准确的光谱模型的必要性,以用于X射线黑孔二进制文件的发光状态。我们建议这样的光谱模型应基于积聚数值模拟的结果。

Puffy disc is a numerical model, expected to capture the properties of the accretion flow in X-ray black hole binaries in the luminous, mildly sub-Eddington state. We fit the kerrbb and kynbb spectral models in XSPEC to synthetic spectra of puffy accretion discs, obtained in general relativistic radiative magnetohydrodynamic simulations, to see if they correctly recover the black hole spin and mass accretion rate assumed in the numerical simulation. We conclude that neither of the two models is capable of correctly interpreting the puffy disc parameters, which highlights a necessity to develop new, more accurate, spectral models for the luminous regime of accretion in X-ray black hole binaries. We propose that such spectral models should be based on the results of numerical simulations of accretion.

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