Constraining dark energy with type Ia supernovae and large-scale structure

被引:474
作者
Perlmutter, S [1 ]
Turner, MS
White, M
机构
[1] EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA
[2] Univ Chicago, Enrico Fermi Inst, Dept Astron, Chicago, IL 60637 USA
[3] Univ Chicago, Enrico Fermi Inst, Dept Astrophys, Chicago, IL 60637 USA
[4] Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA
[5] NASA, Fermilab Astrophys Ctr, Fermi Natl Accelerator Lab, Batavia, IL 60510 USA
[6] Univ Illinois, Dept Astron, Urbana, IL 61801 USA
[7] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
关键词
D O I
10.1103/PhysRevLett.83.670
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Measurements of the distances to type Ia supernovae have produced strong evidence that the expansion of the Universe is accelerating, implying the existence of a nearly uniform component of dark energy with negative pressure, We show that constraints to this mysterious component based upon large-scale structure nicely complement the SN Ia data, and that together they require Omega(X) = rho(X)/rho(crit) is an element of (0.6,0.7) and w = rho(X)/rho(X) < -0.6 (95% C.L.), for the favored hat Universe. Other cosmological data support this conclusion. The simplest explanation, a cosmological constant, is consistent with this, while some of the other possibilities are not.
引用
收藏
页码:670 / 673
页数:4
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