论文标题
Meerkat望远镜的潜力，以检测轴突样颗粒的刺激衰减
Potential of the MeerKAT telescope to detect the stimulated decay of axion-like particles
论文作者
论文摘要
寻找冷暗物质的一个突出的方面是寻找轻标质候选物，例如轴突样颗粒（阿尔卑斯山）。阿尔卑斯山和光子之间的耦合允许阿尔卑斯山自发衰减成对的光子。以前已经证明，刺激的ALP衰减速率在宇宙时间尺度上可能变得很重要。此外，在最近的几项著作中，据称阿尔卑斯山可以在重力化并形成宏观冷凝物。因此，环境种群的光子职业数量（例如宇宙微波背景）可以在致密的ALP团块中增强BOSE，并呈指数增长。对于冷暗物质阿尔卑斯山，这可能会导致此过程产生的无线电排放，并且可以通过即将到来的射电望远镜观察到。在这项工作中，我们使用Meerkat射程望远镜研究了一些天体物理目标的无线电签名的可检测性。结果表明，Meerkat望远镜能够以达到铸造实验的当前水平的限制以及具有高度可见性锥度的IAXO实验水平的限制。
A prominent aspect of the hunt for cold dark matter is looking for light scalar candidates such as axion-like particles (ALPs). The coupling between ALPs and photons allows for the spontaneous decay of ALPs into pairs of photons. It has been previously shown that stimulated ALP decay rates can become significant on cosmic time scales. Furthermore, it has been claimed, in several recent works, that ALPs can gravitationally thermalize and form macroscopic condensates. Consequently, the photon occupation number of ambient populations (like the cosmic microwave background) can receive Bose enhancement in dense ALP clumps and grows exponentially. For cold dark matter ALPs, this can lead to radio emissions produced from this process and could be observed by the forthcoming radio telescopes. In this work, we investigate the detectability of such a radio signature from some astrophysical targets using the MeerKAT radio telescopes. The results show that the MeerKAT telescope is able to probe the ALPs parameter space with limits reaching the current level of the CAST experiment and the potential level of the IAXO experiment with an arcminute visibility taper.
