论文标题
从观察结果和低红移Lyman-$α$ sorest的深色光子暗物质提示
Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$α$ forest
论文作者
论文摘要
最近的工作表明，需要额外的$ \ lyssim 6.9 \ rm {\，ev} $每巴乳间介质中的加热介质，以使水力动力学模拟与lyman-$ lyman-$ lyman-$ lyman-$ lyman-$α$ forest吸收线的宽度在RedShift $ z \ simeq 0.1 $中。深色光子暗物质到低频光子的谐振转化是这种加热的可行来源。我们执行了第一个流体动力学模拟，包括深色光子加热，并表明具有质量$ m_ {a'} \ sim 8 \ times 10^{ - 14} \ rm \，ev \，ev \，c^{ - 2} $和动力学混合$ε\ sim 5 \ sim 10^{ - 15} $可替代暖度。该模型的预测是$ z \ gtrsim 3 $的无标准史的非标准热史。
Recent work has suggested that an additional $\lesssim 6.9 \rm{\, eV}$ per baryon of heating in the intergalactic medium is needed to reconcile hydrodynamical simulations with Lyman-$α$ forest absorption line widths at redshift $z\simeq 0.1$. Resonant conversion of dark photon dark matter into low frequency photons is a viable source of such heating. We perform the first hydrodynamical simulations including dark photon heating and show that dark photons with mass $m_{A'}\sim 8\times 10^{-14}\rm\,eV\,c^{-2}$ and kinetic mixing $ε\sim 5\times 10^{-15}$ can alleviate the heating excess. A prediction of this model is a non-standard thermal history for underdense gas at $z \gtrsim 3$.
