标题： 通过X射线和伽马射线探测大质量恒星中的重类轴子粒子 显示英文标题

标题： Probing Heavy Axion-like Particles from Massive Stars with X-rays and Gamma Rays

摘要： 大质量恒星在其演化后期的高温内部为产生质量高达约100 keV范围的重类轴子粒子（ALPs）提供了理想场所。 我们表明，这些ALPs的一部分可能从恒星光球层流出，并随后衰变为两个光子，这些光子可能在地球或近地空间被探测到。 特别是，我们估计来自水平分支和沃尔夫-拉叶星内部产生的重ALPs自发衰变所产生的光子通量，并评估其被当前和未来的$X$射线和伽马射线望远镜探测的可能性。 我们的结果表明，当前和未来的望远镜可以探测到轴子-光子耦合，低至$g_{a\gamma} \sim 4\times 10^{-11}$GeV${}^{-1}$，对于$m_a\sim 10-100$keV，这覆盖了ALP参数空间中的新领域。 显示英文摘要

摘要： The hot interiors of massive stars in the later stages of their evolution provide an ideal place for the production of heavy axion-like particles (ALPs) with mass up to O(100 keV) range. We show that a fraction of these ALPs could stream out of the stellar photosphere and subsequently decay into two photons that can be potentially detected on or near the Earth. In particular, we estimate the photon flux originating from the spontaneous decay of heavy ALPs produced inside Horizontal Branch and Wolf-Rayet stars, and assess its detectability by current and future $X$-ray and gamma-ray telescopes. Our results indicate that current and future telescopes can probe axion-photon couplings down to $g_{a\gamma} \sim 4\times 10^{-11}$ GeV${}^{-1}$ for $m_a\sim 10-100$ keV, which covers new ground in the ALP parameter space.