论文标题
玻色子星的重力余辉
The Gravitational Afterglow of Boson Stars
论文作者
论文摘要
在这项工作中，我们研究了玻色子星二元合并的长寿命后重力波格特征。我们使用完整的数值相对论模拟合并后并在很长的时间内跟踪引力余辉。我们对二进制初始数据实施了最新的创新，从而大大减少了标量场曲线的虚假初始激发，以及对角动量的度量，使我们能够跟踪空间体积的总动量，包括曲率贡献。至关重要的是，我们发现余辉的持续时间比旋转时间表更长。这种延长的重力波余滑提供了一个特征信号，可以将其与其他天体物理源区分开。
In this work we study the long-lived post-merger gravitational wave signature of a boson-star binary coalescence. We use full numerical relativity to simulate the post-merger and track the gravitational afterglow over an extended period of time. We implement recent innovations for the binary initial data, which significantly reduce spurious initial excitations of the scalar field profiles, as well as a measure for the angular momentum that allows us to track the total momentum of the spatial volume, including the curvature contribution. Crucially, we find the afterglow to last much longer than the spin-down timescale. This prolonged gravitational wave afterglow provides a characteristic signal that may distinguish it from other astrophysical sources.
