论文标题
使用Magnetar PSR J1745-2900搜索轴子暗物质
A Search for Axionic Dark Matter Using the Magnetar PSR J1745-2900
论文作者
论文摘要
我们使用从Karl G. Jansky获得的光谱非常大的阵列报告了来自银河中心磁盘PSR J1745-2900的磁层的暗物质轴转换光子的搜索。未检测到显着的光谱特征。使用PSR J1745-2900的混合模型以及有关暗物质密度曲线的规范假设，我们排除了带有轴轴耦合$ g_ $ g_ {aγγ} $> 6-34 x 10 $^{-12} $ gev $ gev $^{ - 1} $ 95％自由度超过95％的轴承模型，超过了质量兰加4.2-16-4.4.4.4.4.2-4.4.4.2-4.4.2-4.2-12-12-12-19.4.2-4.4.4.2-4。 33.0-41.4、53.7-62.1和126.0-159.3 $μ$ $ ev。如果有暗物质尖端，则限制降低到$ g_ {aγγ} $> 6-34 x 10 $^{ - 14} $ gev $^{ - 1} $，它与观察到的质量范围> 33 $ $ $ $ ev重叠了一些轴模。可以通过对刺激的发射进行建模可以提高轴突 - 光子转换过程来改善这些限制。
We report on a search for dark matter axion conversion photons from the magnetosphere of the Galactic Center magnetar PSR J1745-2900 using spectra obtained from the Karl G. Jansky Very Large Array. No significant spectral features are detected. Using a hybrid model for PSR J1745-2900 and canonical assumptions about the dark matter density profile, we exclude axion models with axion-photon coupling $g_{aγγ}$ > 6-34 x 10$^{-12}$ GeV$^{-1}$ with 95% confidence over the mass ranges 4.2-8.4, 18.6-26.9, 33.0-41.4, 53.7-62.1, and 126.0-159.3 $μ$eV. If there is a dark matter cusp, the limits reduce to $g_{aγγ}$ > 6-34 x 10$^{-14}$ GeV$^{-1}$, which overlap some axion models for the observed mass ranges > 33 $μ$eV. These limits may be improved by modeling the stimulated emission that can boost the axion-photon conversion process.
