论文标题
轴承玻色子星碰撞发射的电磁发射
Electromagnetic emission from axionic boson star collisions
论文作者
论文摘要
我们通过爱因斯坦田间方程的非线性演变在存在轴心耦合的情况下探索玻色子恒星的动力学。我们表明，对于大型轴心耦合，孤立的玻色子恒星变得不稳定，并通过大量的电磁辐射爆发，变得越来越小，更稀释。我们的完整非线性结果与关键耦合的平面估计值非常吻合。然后，我们考虑亚临界玻色子星的正面碰撞，并研究电磁和引力信号。玻色颗星通过相互作用聚集在临界点周围，我们认为合并通常也是电磁辐射的来源，除了引力波之外，如果检测到此类多中电学信号，则可以将其用于在轴上耦合上放置约束。
We explore the dynamics of boson stars in the presence of axionic couplings through nonlinear evolutions of Einstein's field equations. We show that, for large axionic couplings, isolated boson stars become unstable, and decay via a large burst of electromagnetic radiation, becoming less massive and more dilute. Our full nonlinear results are in good agreement with flat-space estimates for the critical couplings. We then consider head-on collisions of sub-critical boson stars and study the electromagnetic and gravitational signal. Boson stars cluster around the critical point via interactions, and we argue that mergers will generically be also sources of electromagnetic radiation, in addition to gravitational waves, which can be used to place constraints on the axionic coupling if such multimessenger signals are detected.
