论文标题
系外行星作为子GEV暗物质探测器
Exoplanets as Sub-GeV Dark Matter Detectors
论文作者
论文摘要
我们将系外行星作为发现暗物质（DM）的新目标。在整个银河系中，DM可以散射，捕获，沉积歼灭能，并增加系外行星内的热流。我们估计了即将到来的红外望远镜敏感性，以找到可行的发现或排除搜索。我们发现，在DM-Proton和DM-Electron Scracting Cross截面上，可以用大约在MEV上方的大约MEV进行DM探测，至$ 10^{ - 37} $ cm $^2 $，比现有限制更强，最多六个数量级。可以通过DM诱导的系外行星的加热来鉴定DM起源的支持证据，因此可以通过银河位置以及DM密度鉴定。这提供了新的动力，以测量整个银河系中数十亿个棕色矮人，流氓行星和气体巨头的温度。
We present exoplanets as new targets to discover Dark Matter (DM). Throughout the Milky Way, DM can scatter, become captured, deposit annihilation energy, and increase the heat flow within exoplanets. We estimate upcoming infrared telescope sensitivity to this scenario, finding actionable discovery or exclusion searches. We find that DM with masses above about an MeV can be probed with exoplanets at DM-proton and DM-electron scattering cross sections down to about $10^{-37}$cm$^2$, stronger than existing limits by up to six orders of magnitude. Supporting evidence of a DM origin can be identified through DM-induced exoplanet heating correlated with Galactic position, and hence DM density. This provides new motivation to measure the temperature of the billions of brown dwarfs, rogue planets, and gas giants peppered throughout our Galaxy.
