Indirect detection of eV dark matter via infrared spectroscopy
Indirect detection of eV dark matter via infrared spectroscopy
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DOI：
10.1103/physrevd.106.095025
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发表时间：
2022-08
影响因子：
5
通讯作者：
Taiki Bessho;Y. Ikeda;W. Yin
中科院分区：
文献类型：
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作者：
Taiki Bessho;Y. Ikeda;W. Yin
红外光谱学已经有了长足的发展。特别是，红外光子可以在最先进的光谱仪上以高光谱和高角度分辨率进行测量。它们对单色光子很敏感，因为超出标准模型的粒子(如暗物质(DM))会衰减和湮灭，同时会抑制形成连续光谱的背景光子。本文研究了利用红外光谱仪间接检测DM衰变为红外光的方法。特别是，我们证明了严重的热和天体物理噪声是可以克服的。作为具体的例子，讨论了麦哲伦6.5m望远镜安装的实现极端色散和灵敏度的热红外回声光谱仪(WINERED)和詹姆斯·韦伯太空望远镜(JWST)的近红外光谱仪(NIRSpec)。我们发现，在麦哲伦望远镜(JWST)上用WINERED(类NIRSpec光谱仪)对一个暗矮小球状星系进行几小时的测量，就可以探测到质量范围为$m_\Phi=1.8-2.7\，$ev($0.5-4\，$eV)的类轴子粒子Dm，并进行光子耦合。文中还给出了利用高分辨率的补充方法，如在8.2m的斯巴鲁望远镜上用红外相机和光谱仪(IRCS)测量信号光子线的多普勒频移，以及可能搜索银河系中心附近的DM衰变。
Infrared spectroscopy has been developed significantly. In particular, infrared photons can be measured with high spectral and angular resolution in state-of-art spectrographs. They are sensitive to monochromatic photons due to the decay and annihilation of particles beyond the Standard Model, such as dark matter (DM), while suppressing background photons that form a continuous spectrum. In this paper, we study the indirect detection of the DM decaying into infrared light using infrared spectrographs. In particular, we show that serious thermal and astrophysical noises can be overcome. As concrete examples, the Warm INfrared Echelle spectrograph to Realize Extreme Dispersion and sensitivity (WINERED) installed at the Magellan Clay 6.5m telescope and Near-Infrared Spectrograph (NIRSpec) at the James Webb Space Telescope (JWST) are discussed. We show that a few hours of measurements of a faint dwarf spheroidal galaxy with WINERED (NIRSpec-like spectrograph) in the Magellan telescope (JWST) can probe an axion-like particle DM in the mass range $m_\phi=1.8 - 2.7\,$eV ($0.5-4\,$eV) with a photon coupling $g_{\phi\gamma\gamma}\gtrsim 10^{-11}{\rm GeV}^{-1}$. Complemental approaches, taking advantage of the high resolutions, such as the measurement of the Doppler shift of the signal photon lines and the possible search of the DM decay around the Milky Way galaxy center with Infrared Camera and Spectrograph (IRCS) at 8.2m Subaru telescope, are also presented.