论文标题
JWST High-Z Galaxy限制在温暖和冷暗物质模型上
JWST high-z galaxy constraints on warm and cold dark matter models
论文作者
论文摘要
我们比较了JWST观察到的高红移星系与流体动力学模拟，在标准的冷暗物质模型中和具有抑制线性物质功率谱的温暖暗物质模型中的性质。我们发现，当前数据与冷暗物质或具有MWDM> 2 keV的温暖暗物质模型不张力，因为它们在不同情况下的物理特性相似。我们还展示了在微弱对象的小尺度上，两个可观察到的可观察力，星系光度函数和星系相关函数如何是有希望的工具，用于区分不同的暗物质模型。进一步的提示可能来自早期恒星质量统计和Galaxy CO排放。
We compare properties of high-redshift galaxies observed by JWST with hydrodynamical simulations, in the standard cold dark matter model and in warm dark matter models with a suppressed linear matter power spectrum. We find that current data are not in tension with cold dark matter nor with warm dark matter models with mWDM > 2 keV, since they probe bright and rare objects whose physical properties are similar in the different scenarios. We also show how two observables, the galaxy luminosity functions and the galaxy correlation function at small scales of faint objects, can be promising tools for discriminating between the different dark matter models. Further hints may come from early stellar-mass statistics and galaxy CO emission.
