Principal component analysis of modified gravity using weak lensing and peculiar velocity measurements

	Principal component analysis of modified gravity using weak lensing and peculiar velocity measurements
	Asaba, Shinsuke 1; Hikage, Chiaki 2; Koyama, Kazuya 3; Zhao, Gong-Bo3,4 ; Hojjati, Alireza 5; Pogosian, Levon 3,6,7
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2013-08-01
期号	8
关键词	modified gravity redshift surveys weak gravitational lensing
英文摘要	We perform a principal component analysis to assess ability of future observations to measure departures from General Relativity in predictions of the Poisson and anisotropy equations on linear scales. In particular, we focus on how the measurements of redshift-space distortions (RSD) observed from spectroscopic galaxy redshift surveys will improve the constraints when combined with lensing tomographic surveys. Assuming a Euclid-like galaxy imaging and redshift survey, we find that adding the 3D information decreases the statistical uncertainty by a factor between 3 and 7 compared to the case when only observables from lensing tomographic surveys are used. We also find that the number of well-constrained modes increases by a factor between 3 and 6. Our study indicates the importance of joint galaxy imaging and redshift surveys such as SuMIRe and Euclid to give more stringent tests of the Lambda CDM model and to distinguish between various modified gravity and dark energy models.
收录类别	SCI
语种	英语
WOS记录号	WOS:000324032800032
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5973]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Nagoya Univ, Dept Phys, Grad Sch Sci, Aichi 4648602, Japan 2.Nagoya Univ, KMI, Aichi 4648602, Japan 3.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Ewha Womans Univ, Inst Early Universe, Seoul 120750, South Korea 6.Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada 7.Univ Cambridge, DAMTP, Ctr Theoret Cosmol, Cambridge CB3 0WA, England
推荐引用方式 GB/T 7714	Asaba, Shinsuke,Hikage, Chiaki,Koyama, Kazuya,et al. Principal component analysis of modified gravity using weak lensing and peculiar velocity measurements[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2013(8).
APA	Asaba, Shinsuke,Hikage, Chiaki,Koyama, Kazuya,Zhao, Gong-Bo,Hojjati, Alireza,&Pogosian, Levon.(2013).Principal component analysis of modified gravity using weak lensing and peculiar velocity measurements.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8).
MLA	Asaba, Shinsuke,et al."Principal component analysis of modified gravity using weak lensing and peculiar velocity measurements".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2013).