论文标题
银河偏光发射的普朗克观察的暗物质约束
Dark Matter constraints from Planck observations of the Galactic polarized synchrotron emission
论文作者
论文摘要
我们银河系中的暗物质（DM）歼灭可能会产生线性极化的同步子信号。我们首次使用同步偏振来限制DM歼灭横截面，通过将理论预测与普朗克卫星协作获得的最新极化图进行比较。我们发现，同步加速器极化通常比同步加速器强度大约一个数量级更具约束力，而与电子和正电子传播建模或银河磁场的不确定性无关。在瘦素DM的情况下，我们的边界与宇宙微波背景限制竞争。
Dark Matter (DM) annihilation in our Galaxy may produce a linearly polarized synchrotron signal. We use, for the first time, synchrotron polarization to constrain the DM annihilation cross section by comparing theoretical predictions with the latest polarization maps obtained by the Planck satellite collaboration. We find that synchrotron polarization is typically more constraining than synchrotron intensity by about one order of magnitude, independently of uncertainties in the modeling of electron and positron propagation, or of the Galactic magnetic field. Our bounds compete with Cosmic Microwave Background limits in the case of leptophilic DM.
