论文标题
BOSS DR12 NGC CMASS的集成三光谱检测
Integrated trispectrum detection from BOSS DR12 NGC CMASS
论文作者
论文摘要
我们介绍了对Boss CMASS NGC DR12的集成Trispectrum（$ \ Mathit {i} $ - Trispectrum）单调的第一个检测。将FKP估计量的形式主义扩展到四点相关函数的傅立叶变换，我们测试射击噪声减法，I-Triseptrum数据矢量的高斯性减法，数据检测的重要性以及来自数据的信号的重要性以及来自Galaxy Mocks从用于数字估计协方差次数基质的网状模拟目录中的相似性。使用对应于最低$ k_ \ mathrm {min} = 0.03 \，h/\ mathrm {mpc} $到最大$ k_ \ mathrm {minrm {min} = 0.15 \，h/\ mathrm {mpc} $，我们在距离发现距离的距离的情况下，我们找到距离距离的距离， $（10.4,5.2,8.3,1.1,3.1）分别用于I-Trispectrum Monopole和四倍体的$ $σ$ -Intervals。这量化了Boss数据四点统计的物理信号的存在。为了使整个分析对于功率谱和双杆和四极杆进行相同的分析。
We present the first detection of the integrated trispectrum ($\mathit{i}$-trispectrum) monopole and quadrupoles signal from BOSS CMASS NGC DR12. Extending the FKP estimators formalism to the Fourier transform of the four-point correlation function, we test shot-noise subtraction, Gaussianity of the i-trispectrum data-vector, significance of the detection and similarity between the signal from the data and from the galaxy mock catalogues used to numerically estimate the covariance matrix. Using scales corresponding to modes from minimum $k_\mathrm{min}=0.03\,h/\mathrm{Mpc}$ to maximum $k_\mathrm{min}=0.15\,h/\mathrm{Mpc}$, we find a detection in terms of distance from the null hypothesis of $(10.4,5.2,8.3,1.1,3.1)$ $σ$-intervals for the i-trispectrum monopole and quadrupoles respectively. This quantifies the presence of the physical signal of the four-points statistics on BOSS data. For completeness the same analysis is also performed for power spectrum and bispectrum, both monopoles and quadrupoles.
