Gravitational Waves and Possible Fast Radio Bursts from Axion Clumps
Gravitational Waves and Possible Fast Radio Bursts from Axion Clumps
复制标题
DOI：
10.1103/physrevd.104.103009
复制
发表时间：
2020-03
期刊：
影响因子：
--
通讯作者：
Sichun Sun;Yun-Long Zhang
中科院分区：
文献类型：
--
作者：
Sichun Sun;Yun-Long Zhang
旋转黑洞周围的轴子物体，如轴子微星团和轴子云，通过轴子-光子相互作用诱导电磁波的参数共振。特别是，人们已经知道，质量在10^-6 eV左右的轴子的共振可以解释观测到的快速射电爆发(FRB)。我们认为类似的高频引力波爆发，我们称之为快速引力波爆发(FGB)，是由存在引力Chern-Simons(CS)耦合的轴子团产生的。典型的频率是轴子质量的一半，通常范围从千赫到GHz。我们还讨论了与FRB有关的二次引力波的产生，以及轴子云可能的宿主天体，例如典型质量在10^-5 M\ODOT$附近的原始黑洞。未来对FGB的探测以及观测到的FRB有望为轴子提供更多证据。
The axion objects such as axion mini-clusters and axion clouds around spinning black holes induce parametric resonances of electromagnetic waves through the axion-photon interaction. In particular, it has been known that the resonances from the axion with the mass around $10^{-6}$eV may explain the observed fast radio bursts (FRBs). Here we argue that similar bursts of high frequency gravitational waves, which we call the fast gravitational wave bursts (FGBs), are generated from axion clumps with the presence of gravitational Chern-Simons (CS) coupling. The typical frequency is half of the axion mass, which in general can range from kHz to GHz. We also discuss the secondary gravitational wave production associated with FRB, as well as the possible host objects of the axion clouds, such as primordial black holes with typical masses around $10^{-5}M_{\odot}$. Future detections of FGBs together with the observed FRBs are expected to provide more evidence for the axion.