论文标题
在Omega Centauri集群中歼灭暗物质的限制
Constraints on annihilating dark matter in the Omega Centauri cluster
论文作者
论文摘要
最近的伽马射线和无线电研究对消灭暗物质特性的限制获得了一些严格的限制。但是，只有少数研究的重点是使用X射线数据来限制歼灭暗物质。在本文中，我们使用Omega Centauri簇的数据对歼灭暗物质进行X射线分析。如果暗物质是对欧米茄百万人类群中得出的非湿质量成分的正确解释，则热暗物质的保守下限通过$τ^+τ^ - $，$ b \ bar {b \ bar {b} $和$ w^+w^^ - $通道可显着改善到104（43）geev和43（43）geev，g.43（43）geev，g.67（167），geev，67（167），geev，67（43）（43）（43）geev，geev，67（167），geev，geev，geev，67（167），geev，gev and g。假设扩散系数$ d_0 \ le 10^{26}（10^{27}）$ cm $^2 $/s。这些约束可以安全地排除最近对我们银河系中伽马射物过量和反普罗顿过量的暗物质解释的主张。一般而言，对于非封闭式歼灭通道而获得的保守下限比通过对附近矮星系的伽马射线分析获得的保守性要严格得多。我们预计这将打开一个新窗口，以限制歼灭暗物质。
Recent gamma-ray and radio studies have obtained some stringent constraints on annihilating dark matter properties. However, only a few studies have focussed on using X-ray data to constrain annihilating dark matter. In this article, we perform the X-ray analysis of annihilating dark matter using the data of the Omega Centauri cluster. If dark matter is the correct interpretation of the non-luminous mass component derived in the Omega Centauri cluster, the conservative lower limits of thermal dark matter mass annihilating via the $τ^+τ^-$, $b\bar{b}$ and $W^+W^-$ channels can be significantly improved to 104(43) GeV, 650(167) GeV and 480(137) GeV respectively, assuming the diffusion coefficient $D_0 \le 10^{26}(10^{27})$ cm$^2$/s. These constraints can safely rule out the recent claims of dark matter interpretation of the gamma-ray excess and anti-proton excess seen in our Galaxy. Generally speaking, the conservative lower limits obtained for non-leptophilic annihilation channels are much more stringent than that obtained by gamma-ray analysis of nearby dwarf galaxies. We anticipate that this would open a new window for constraining annihilating dark matter.
