论文标题
从坚硬的$ x $ ray观察betelgeuse对轴突状粒子的限制
Constraints on Axion-like Particles from a Hard $X$-ray Observation of Betelgeuse
论文作者
论文摘要
我们在硬$ x $ rays中首次使用betelgeuse的观察来对类似轴突的颗粒（阿尔卑斯山）进行新颖的搜索。预计Betelgeuse不会成为$ x $ rays的标准来源，但是在恒星核心中产生的轻型阿尔卑斯山可以在银河磁场中转换回光子，从而产生可检测到的通量，在硬$ x $ ray band中达到峰值（$e_γ> $e_γ> 10 \ sathrm {\ kev，kev} $）。使用$ Nustar $卫星望远镜对Betelgeuse的50 KS观察，我们发现在预期的背景之上没有大量过量事件。使用贝特尔盖塞（Betelgeuse）方向的常规银河磁场的模型，我们设定了95％的C.L. $ {g_ {aγ} <（0.5-1.8）\ times10^{ - 11}} $ gev $^{ - 1} $（取决于磁场模型）的Alp-Photon耦合的上限
We use the first observation of Betelgeuse in hard $X$-rays to perform a novel search for axion-like particles (ALPs). Betelgeuse is not expected to be a standard source of $X$-rays, but light ALPs produced in the stellar core could be converted back into photons in the Galactic magnetic field, producing a detectable flux that peaks in the hard $X$-ray band ($E_γ>10\mathrm{\,keV}$). Using a 50 ks observation of Betelgeuse by the $NuSTAR$ satellite telescope, we find no significant excess of events above the expected background. Using models of the regular Galactic magnetic field in the direction of Betelgeuse, we set a 95% C.L. upper limit on the ALP-photon coupling of ${g_{aγ}<(0.5-1.8)\times10^{-11}}$ GeV$^{-1}$ (depending on magnetic field model) for ALP masses ${m_{a}<(5.5-3.5) \times10^{-11}}$ eV.
