标题： 大质量布兰斯-迪克引力中的二进制X射线源 显示英文标题

标题： Binary X-ray sources in massive Brans-Dicke gravity

摘要： 本研究关注大质量Brans-Dicke引力中的低质量黑洞双星的X射线辐射。 首先，我们采用众所周知的Shakura-Sunyaev模型计算吸积盘，该模型适用于光学厚、冷且几何薄的盘。 此外，我们假设由恒星级黑洞产生的引力场在大质量Brans-Dicke引力中是爱因斯坦理论中Schwarzschild时空的类比。 我们计算了感兴趣的最相关量，即i) 径向速度，ii) 能量和表面密度，以及iii) 压力作为径向坐标的函数。 我们还计算了由盘产生的X射线辐射的软光谱成分。 此外，我们详细研究了标量场的质量如何改变二进制系统的性质，如标准Schwarzschild解所描述的那样。 显示英文摘要

摘要： This study focuses on the X-ray emission of low-mass black hole binaries in massive Brans-Dicke gravity. First, we compute the accretion disk adopting the well-known Shakura-Sunyaev model for an optically thick, cool, and geometrically thin disk. Moreover, we assume that the gravitational field generated by the stellar-mass black hole is an analogue of the Schwarzschild space-time of Einstein's theory in massive Brans-Dicke gravity. We compute the most relevant quantities of interest, i.e., i) the radial velocity, ii) the energy and surface density, and iii) the pressure as a function entirely of the radial coordinate. We also compute the soft spectral component of the X-ray emission produced by the disk. Furthermore, we investigate in detail how the mass of the scalar field modifies the properties of the binary as described by the more standard Schwarzschild solution.