论文标题
在二进制恒星中限制潮汐现象的重力
Constraining modified gravity from tidal phenomena in binary stars
论文作者
论文摘要
在重力范围内的重力理论中，Vainshtein筛选机制可能仅在恒星物体内部有效。这会导致恒星内部压力平衡方程的修改，通常以各向同性系统中的单个参数（$υ$）为特征。我们展示了如何使用潮汐效应来限制这种修饰的重力理论。我们研究了灾难性变量二进制二进制的这种效果，并通过数值对供体星的临界质量获得限制，在这些供体恒星的临界质量下方，通过在Horndeski Beyondski理论中进行建模，在供体恒星的下方会受到潮湿的破坏。这与蒙特卡洛误差进程方法使用现有观察数据获得的供体质量的值形成鲜明对比。两者的最佳拟合场景在所使用的近似值内产生了我们考虑的理论的参数约束。在这里，我们获得了允许的范围$ 0 \leυ\ le 0.47 $。
In beyond-Horndeski theories of gravity, the Vainshtein screening mechanism might only be partially effective inside stellar objects. This results in a modification of the pressure balance equation inside stars, often characterized by a single parameter ($Υ$) in isotropic systems. We show how to constrain such theories of modified gravity, using tidal effects. We study such effects in cataclysmic variable star binaries and numerically obtain limits on the critical masses of the donor stars, below which they are tidally disrupted, by modeling them in beyond-Horndeski theories. This is contrasted with values of the donor masses, obtained using existing observational data, by a Monte Carlo error progression method. A best fit scenario of the two yields a parametric constraint in the theories that we consider, within the approximations used. Here, we obtain the allowed range $ 0 \le Υ\le 0.47 $.
