Evidence for Dark Energy from the Cosmic Microwave Background Alone Using the Atacama Cosmology Telescope Lensing Measurements

被引：120

作者：

Sherwin, Blake D. ^{[1
]}

Dunkley, Joanna ^{[1
,2
,3
]}

Das, Sudeep ^{[1
,3
,4
]}

Appel, John W. ^{[1
]}

Bond, J. Richard ^{[5
]}

Sofia Carvalho, C. ^{[6
,7
]}

Devlin, Mark J. ^{[8
]}

Duenner, Rolando ^{[9
]}

Essinger-Hileman, Thomas ^{[1
]}

Fowler, Joseph W. ^{[1
]}

Hajian, Amir ^{[1
,3
,5
]}

Halpern, Mark ^{[11
]}

Hasselfield, Matthew ^{[11
]}

Hincks, Adam D. ^{[1
]}

Hlozek, Renee ^{[2
]}

Hughes, John P. ^{[12
]}

Irwin, Kent D. ^{[10
]}

Klein, Jeff ^{[8
]}

Kosowsky, Arthur ^{[13
]}

Marriage, Tobias A. ^{[3
,14
]}

Marsden, Danica ^{[8
]}

Moodley, Kavilan ^{[15
]}

Menanteau, Felipe ^{[12
]}

Niemack, Michael D. ^{[1
,10
]}

Nolta, Michael R. ^{[5
]}

Page, Lyman A. ^{[1
]}

Parker, Lucas ^{[1
]}

Reese, Erik D. ^{[8
]}

Schmitt, Benjamin L. ^{[8
]}

Sehgal, Neelima ^{[16
]}

Sievers, Jon ^{[5
]}

Spergel, David N. ^{[3
]}

Staggs, Suzanne T. ^{[1
]}

Swetz, Daniel S. ^{[8
,10
]}

Switzer, Eric R. ^{[1
,17
]}

Thornton, Robert ^{[8
,18
]}

Visnjic, Katerina ^{[1
]}

Wollack, Ed ^{[19
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England

[3] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[4] Univ Calif Berkeley, Dept Phys, BCCP, Berkeley, CA 94720 USA

[5] Univ Toronto, CITA, Toronto, ON M5S 3H8, Canada

[6] IST, IPFN, P-1049001 Lisbon, Portugal

[7] RCAAM, Acad Athens, Athens 11527, Greece

[8] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[9] Pontificia Univ Catolica Chile, Dept Astron & Astrofis, Santiago 22, Chile

[10] NIST Quantum Devices Grp, Boulder, CO 80305 USA

[11] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

[12] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[13] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[14] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[15] Univ KwaZulu Natal, Astrophys & Cosmol Res Unit, ZA-4041 Durban, South Africa

[16] Stanford Univ, KIPAC, Stanford, CA 94305 USA

[17] Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[18] W Chester Univ Penn, Dept Phys, W Chester, PA 19383 USA

[19] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 01期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

PROBE WMAP OBSERVATIONS; CONSTRAINTS; ANISOTROPIES;

D O I：

10.1103/PhysRevLett.107.021302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the first time, measurements of the cosmic microwave background radiation (CMB) alone favor cosmologies with w = -1 dark energy over models without dark energy at a 3.2-sigma level. We demonstrate this by combining the CMB lensing deflection power spectrum from the Atacama Cosmology Telescope with temperature and polarization power spectra from the Wilkinson Microwave Anisotropy Probe. The lensing data break the geometric degeneracy of different cosmological models with similar CMB temperature power spectra. Our CMB-only measurement of the dark energy density Omega(Lambda) confirms other measurements from supernovae, galaxy clusters, and baryon acoustic oscillations, and demonstrates the power of CMB lensing as a new cosmological tool.

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页数：5

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