论文标题
Proca恒星类似波的性质对重力波排放的影响
Impact of the wave-like nature of Proca stars on their gravitational-wave emission
论文作者
论文摘要
我们介绍了一项系统的研究，对旋转载体玻色子恒星（称为Proca恒星）正面碰撞的动力学和重力波发射。为此，我们构建了此类系统的大约800个数值 - 余地模拟的目录。我们发现，骨恒星的波形性质对重力波发射具有很大的影响。特别是，我们表明，两个复杂场的初始相对相$δε=ε_1-ε_2$构成恒星（或等效地，合并的相对相）都会强烈影响发射的重力波能和相应的模式结构。这导致发射对次级星$ω_2$的频率的非单调依赖性，对于固定频率$ω_1$。这种现象学尚未在黑洞合并的情况下发现，它反映了Proca领域在建设性和破坏性的举止上与自身互动的独特能力。我们假设这可能是吸烟枪，以阐明这些物体的可能存在。
We present a systematic study of the dynamics and gravitational-wave emission of head-on collisions of spinning vector boson stars, known as Proca stars. To this aim we build a catalogue of about 800 numerical-relativity simulations of such systems. We find that the wave-like nature of bosonic stars has a large impact on the gravitational-wave emission. In particular, we show that the initial relative phase $Δε=ε_1-ε_2$ of the two complex fields forming the stars (or equivalently, the relative phase at merger) strongly impacts both the emitted gravitational-wave energy and the corresponding mode structure. This leads to a non-monotonic dependence of the emission on the frequency of the secondary star $ω_2$, for fixed frequency $ω_1$ of the primary. This phenomenology, which has not been found for the case of black-hole mergers, reflects the distinct ability of the Proca field to interact with itself in both constructive and destructive manners. We postulate this may serve as a smoking gun to shed light on the possible existence of these objects.
