sub-GeV暗物质在中央分子区引发的异常电离
Anomalous Ionization in the Central Molecular Zone by sub-GeV Dark Matter
AI总结：
该研究提出中央分子区异常电离源于MeV暗物质湮灭产生$e^+e^-$对，并指出其可能与银心511 keV线辐射同源。
摘要：
我们证明，对于斜率γ>1的银河系暗物质分布，中央分子区观测到的异常电离率可归因于MeV暗物质湮灭为$e^+e^-$对。所需的低湮灭截面避开了宇宙学约束，并意味着在射电、X射线和γ射线波段不存在可探测的逆康普顿辐射、轫致辐射或同步辐射。它与银心尚未解释的511 keV线辐射源之间可能存在的联系表明，这两项观测可能相关并具有共同起源。
英文摘要：
We demonstrate that the anomalous ionization rate observed in the Central Molecular Zone can be attributed to MeV dark matter annihilations into $e^+e^-$ pairs for galactic dark matter profiles with slopes $γ>1$. The low annihilation cross-sections required avoid cosmological constraints and imply no detectable inverse Compton, bremsstrahlung or synchrotron emissions in radio, X and gamma rays. The possible connection to the source of the unexplained 511 keV line emission in the Galactic Center suggests that both observations could be correlated and have a common origin.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
