Three-dimensional smoothed particle hydrodynamics simulations of radiation-driven warped accretion discs
Three-dimensional smoothed particle hydrodynamics simulations of radiation-driven warped accretion discs
复制标题
辐射驱动扭曲吸积盘的三维平滑粒子流体动力学模拟
DOI：
10.1111/j.1365-2966.2005.09910.x
复制
发表时间：
2006
影响因子：
4.8
通讯作者：
J. Murray
中科院分区：
文献类型：
--
作者：
S. Foulkes;C. Haswell;J. Murray
本文采用三维光滑粒子流体动力学方法计算了X射线双星系统中翘曲吸积盘。几何薄，光学厚的吸积盘由中央辐射源照明。这种照射在盘的表面上施加非轴对称的辐射压力，导致作用在盘上的扭矩以引起扭曲或翘曲。最初的平面盘是不稳定的翘曲驱动的辐射扭矩，在一般情况下，翘曲也在逆行的方向相对于轨道流进动。我们模拟了一些X射线双星系统，具有不同的质量比，使用一些不同的光度为每个。辐射驱动的翘曲发生在所有模拟系统中。当质量比q ≥ 0.1时，内盘会发生适度的翘曲，而外盘则保持在轨道平面内（参见图1）。X 1916−053）。对于不太极端的质量比，整个圆盘倾斜出轨道平面（参见图1）。她的X-1）。对于倾斜出轨道平面的圆盘，其中圆盘的外边缘材料在轨道平面中以椭圆方向进动，我们在耗散光变曲线中同时获得正和负的超级峰（参见图10）。V603 Aql）。
We present three-dimensional smoothed particle hydrodynamics calculations of warped accretion discs in X-ray binary systems. Geometrically thin, optically thick accretion discs are illuminated by a central radiation source. This illumination exerts a non-axisymmetric radiation pressure on the surface of the disc, resulting in a torque that acts on the disc to induce a twist or warp. Initially planar discs are unstable to warping driven by the radiation torque and, in general, the warps also precess in a retrograde direction relative to the orbital flow. We simulate a number of X-ray binary systems which have different mass ratios, using a number of different luminosities for each. Radiation-driven warping occurs for all systems simulated. For mass ratios q ∼ 0.1 a moderate warp occurs in the inner disc while the outer disc remains in the orbital plane (cf. X 1916−053). For less extreme mass ratios, the entire disc tilts out of the orbital plane (cf. Her X‐1). For discs that are tilted out of the orbital plane in which the outer edge material of the disc is precessing in a prograde direction, we obtain both positive and negative superhumps simultaneously in the dissipation light curve (cf. V603 Aql).
R^3 中开曲线的总曲率
DOI：
--
发表时间：
2008
期刊：
Illinois J.of Math.(受理)
影响因子：
--
作者：
K. Enomoto;J. Itoh;R. Sinclair
通讯作者：
R. Sinclair