Cosmological inference from an emulator based halo model. I. Validation tests with HSC and SDSS mock catalogs
Cosmological inference from an emulator based halo model. I. Validation tests with HSC and SDSS mock catalogs
复制标题
来自基于模拟器的光环模型的宇宙学推断。
DOI：
10.1103/physrevd.106.083519
复制
发表时间：
2022
影响因子：
5
通讯作者：
et al. (including R. Takahashi)
中科院分区：
文献类型：
--
作者：
Miyatake Hironao;Kobayashi Yosuke;Takada Masahiro;et al. (including R. Takahashi)
我们提出了基于模拟器的晕模型方法的宇宙学参数推断的验证测试，假设测量的星系的投影相关函数，和星系-星系弱透镜，从光谱SDSS星系和超Suprime-Cam Year 1（HSC-Y1）星系。为此，我们使用了Nishimichi等人开发的基于体模拟系综的标记模拟器，这是一个模拟软件包，能够快速，准确地计算平坦几何冷暗物质宇宙学的晕聚集量（晕质量函数，晕自相关和晕物质互相关）。采用晕占据分布，模拟器使我们能够在几个CPU秒内获得输入参数集的SDSS类星系的模型预测。我们目前的性能和验证的方法进行马尔可夫链蒙特卡罗分析的模拟信号从各种模拟目录，模仿SDSS和HSC-Y1星系。我们表明，晕模型方法可以恢复潜在的真实的宇宙学参数在68%的可信区间内，除了模拟，包括组装偏置效应（虽然我们考虑了不切实际的大幅度组装偏置效应）。即使对于组装偏差模拟，我们也证明了如果分析限于尺度（即，如果不包括的1-halo项中固有的SDSS星系的平均质量信息）。我们还表明，通过使用一个单一的人口源星系来推断的相对强度为多个透镜样品在不同的红移，联合探针方法允许自校准的光度红移误差和乘法剪切偏差。因此，基于仿真器的Halo模型方法可以安全地应用于HSC-Y1数据集，在边缘化多余参数（如星系-晕连接参数和光误差参数）后达到精度，并且该方法是基于微扰理论的方法的补充。
We present validation tests of emulator-based halo model method for cosmological parameter inference, assuming hypothetical measurements of the projected correlation function of galaxies,, and the galaxy-galaxy weak lensing,, from the spectroscopic SDSS galaxies and the Hyper Suprime-Cam Year 1 (HSC-Y1) galaxies. To do this, we usedark emulatordeveloped in Nishimichiet al.based on an ensemble of-body simulations, which is an emulation package enabling a fast, accurate computation of halo clustering quantities (halo mass function, halo autocorrelation and halo-matter cross-correlation) for flat-geometry cold dark matter cosmologies. Adopting the halo occupation distribution, the emulator allows us to obtain model predictions ofandfor the SDSS-like galaxies at a few CPU seconds for an input set of parameters. We present performance and validation of the method by carrying out Markov chain Monte Carlo analyses of the mock signals measured from a variety of mock catalogs that mimic the SDSS and HSC-Y1 galaxies. We show that the halo model method can recover the underlying true cosmological parameters to within the 68% credible interval, except for the mocks including the assembly bias effect (although we consider the unrealistically large amplitude of assembly bias effect). Even for the assembly bias mock, we demonstrate that the cosmological parameters can be recovered if the analysis is restricted to scales(i.e., if the information on the average mass of halos hosting SDSS galaxies inherent in the 1-halo term ofis not included). We also show that, by using a single population of source galaxies to infer the relative strengths offor multiple lens samples at different redshifts, the joint probes method allows for self-calibration of photometric redshift errors and multiplicative shear bias. Thus we conclude that the emulator-based halo model method can be safely applied to the HSC-Y1 dataset, achieving a precision ofafter marginalization over nuisance parameters such as the galaxy-halo connection parameters and the photo-error parameter, and our method is complementary to methods based on perturbation theory.
登录
查看更多内容
影响因子：
2.3
作者：
M. Takada;R. Ellis;M. Chiba;J. Greene;H. Aihara;N. Arimoto;K. Bundy;J. Cohen;O. Dor'e
通讯作者：
M. Takada;R. Ellis;M. Chiba;J. Greene;H. Aihara;N. Arimoto;K. Bundy;J. Cohen;O. Dor'e
影响因子：
6.5
作者：
Hartlap, J.;Simon, P.;Schneider, P.
通讯作者：
Schneider, P.
一致性宇宙学？
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
Youngsoo Park;E. Rozo
通讯作者：
E. Rozo
影响因子：
64.8
作者：
M. Vogelsberger;S. Genel;V. Springel;P. Torrey;D. Sijacki;Da Xu;G. Snyder;Simeon Bird;D. Nelson;Lars Hernquist Mit;HarvardCfA;Hits;I. Cambridge;Stsci;Ias Princeton
通讯作者：
M. Vogelsberger;S. Genel;V. Springel;P. Torrey;D. Sijacki;Da Xu;G. Snyder;Simeon Bird;D. Nelson;Lars Hernquist Mit;HarvardCfA;Hits;I. Cambridge;Stsci;Ias Princeton
阿塔卡马宇宙学望远镜旋光仪选择的星系团的 Hyper Suprime-Cam 弱透镜测量
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
Shirasaki Masato;Takada Masahiro;Miyatake Hironao;Takahashi Ryuichi;Hamana Takashi;Nishimichi Takahiro;Murata Ryoma;Hironao Miyatake
通讯作者：
Hironao Miyatake