基于NVDIA GPU的双星质量传递N体模拟
N-body simulation of binary star mass transfer using NVDIA GPUs
摘要：
双星系统对天文学家特别感兴趣，因为它们可以作为天体物理实验室来研究恒星的性质和过程。我们银河系中70%到90%的恒星都是双星系统的一部分。在观测到的许多类型的双星系统中，半分离和接触系统的动力学是最有趣的，因为它们表现出质量转移，这改变了两颗恒星的组成和生命周期。传质过程的时间尺度非常大，这使得该过程不可能通过物理观察来捕获。计算机模拟已被证明是非常宝贵的，在完善我们的理解传质过程。在这里，我们介绍了一个直观的，计算效率高，重力为中心的模型，模拟膨胀的恒星的洛希瓣的填充和通过第一拉格朗日点的质量转移。
英文摘要：
Binary star systems are of particular interest to astronomers because they can be used as astrophysical laboratories to study the properties and processes of stars. Between 70% to 90% of the stars in our galaxy are part of a binary star system. Among the many types of binary systems observed, the dynamics of semi-detached and contact systems are the most interesting because they exhibit mass transfer, which changes the composition and life cycle of both stars. The time scales of the mass transfer process are extremely large which makes the process impossible to capture through physical observation. Computer simulations have proved invaluable in refining our understanding of the mass transfer processes. Here we introduce an intuitive, computationally efficient, gravity centered model that simulates the filling of the Roche lobe of an expanding star and its transfer of mass through the first Lagrangian point.
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