论文标题
来自星系光度函数的原始功率谱的限制
Constraints on Primordial Power Spectrum from Galaxy Luminosity Functions
论文作者
论文摘要
我们首次从高红移的Galaxy UV光度函数（LFS）中得出了对原始功率谱的限制。由于Galaxy LFS反映了依赖原始波动的潜在光晕质量功能，因此可以限制原始功率谱，尤其是在小尺度上。我们通过针对原始功率谱以及描述天体物理学的参数来执行马尔可夫链蒙特卡洛分析。我们采用$ z = 6 -10 $的Hubble Frontier Fields数据得出的UV LFS，这使我们能够在$ K \ SIM \ SIM \ SIM 10-10-10^3〜 {\ rm MPC}^{ - 1} $的尺度上探测原始波动。我们的分析还阐明了对宇宙学的假设（例如原始功率谱）如何影响天体物理参数的确定。
We derive constraints on primordial power spectrum, for the first time, from galaxy UV luminosity functions (LFs) at high redshifts. Since the galaxy LFs reflect an underlying halo mass function which depends on primordial fluctuations, one can constrain primordial power spectrum, particularly on small scales. We perform a Markov Chain Monte Carlo analysis by varying parameters for primordial power spectrum as well as those describing astrophysics. We adopt the UV LFs derived from Hubble Frontier Fields data at $z = 6 -10$, which enable us to probe primordial fluctuations on the scales of $k \sim 10 - 10^3~{\rm Mpc}^{-1}$. Our analysis also clarifies how the assumption on cosmology such as primordial power spectrum affects the determination of astrophysical parameters.
