Mapping dark matter with cosmic magnification

	Mapping dark matter with cosmic magnification
	Zhang, PJ ; Pen, UL
刊名	PHYSICAL REVIEW LETTERS
	2005-12-09
卷号	95 期号:24 页码:241302
英文摘要	We develop a new tool to generate statistically precise dark matter maps from the cosmic magnification of galaxies with distance estimates. We show how to overcome the intrinsic clustering problem using the slope of the luminosity function, because magnification changes strongly over the luminosity function, while intrinsic clustering only changes weakly. This may allow precision cosmology beyond most current systematic limitations. The Square Kilometre Array is able to reconstruct the projected matter density map at smoothing scale similar to 10' with S/N >= 1, at the rate of 200-4000 deg(2) per year, depending on the abundance and evolution of 21 cm emitting galaxies. This power of mapping dark matter is comparable to, or even better than, that of cosmic shear from deep optical surveys or 21 cm surveys.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	LARGE-SCALE STRUCTURE ; WEAK ; GALAXIES ; RECONSTRUCTION ; EVOLUTION ; SKEWNESS
收录类别	SCI
语种	英语
WOS记录号	WOS:000233826100014
公开日期	2010-11-08
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/11933]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 3.Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada
推荐引用方式 GB/T 7714	Zhang, PJ,Pen, UL. Mapping dark matter with cosmic magnification[J]. PHYSICAL REVIEW LETTERS,2005,95(24):241302.
APA	Zhang, PJ,&Pen, UL.(2005).Mapping dark matter with cosmic magnification.PHYSICAL REVIEW LETTERS,95(24),241302.
MLA	Zhang, PJ,et al."Mapping dark matter with cosmic magnification".PHYSICAL REVIEW LETTERS 95.24(2005):241302.