A younger age for the universe

被引:36
作者
Lineweaver, CH [1 ]
机构
[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
关键词
D O I
10.1126/science.284.5419.1503
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The age of the universe in the Big Bang model can be calculated from three parameters: Hubble's constant, h; the mass density of the universe, Omega(m); and the cosmological constant, Omega(Lambda). Recent observations of the cosmic microwave background and six other cosmological measurements reduce the uncertainty in these three parameters, yielding an age for the universe of 13.4 +/- 1.6 billion years, which is a billion years younger than other recent age estimates. A different standard Big Bang model, which includes cold dark matter with a cosmological constant, provides a consistent and absolutely time-calibrated evolutionary sequence for the universe.
引用
收藏
页码:1503 / 1507
页数:5
相关论文
共 49 条
[1]   The most massive distant clusters:: Determining Ω and σ8 [J].
Bahcall, NA ;
Fan, XH .
ASTROPHYSICAL JOURNAL, 1998, 504 (01) :1-6
[2]   Constraining Omega with cluster evolution [J].
Bahcall, NA ;
Fan, XH ;
Cen, RY .
ASTROPHYSICAL JOURNAL, 1997, 485 (02) :L53-L56
[3]   The deuterium abundance toward Q1937-1009 [J].
Burles, S ;
Tytler, D .
ASTROPHYSICAL JOURNAL, 1998, 499 (02) :699-712
[4]  
CARLBERG R, 1998, FUNDAMENTAL PARAMETE
[5]   Average mass and light profiles of galaxy clusters [J].
Carlberg, RG ;
Yee, HKC ;
Ellingson, E .
ASTROPHYSICAL JOURNAL, 1997, 478 (02) :462-475
[6]  
Carraro G, 1999, ASTRON ASTROPHYS, V343, P825
[7]   THE COSMOLOGICAL CONSTANT [J].
CARROLL, SM ;
PRESS, WH ;
TURNER, EL .
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1992, 30 :499-542
[8]   The age of globular clusters in light of hipparcos: Resolving the age problem? [J].
Chaboyer, B ;
Demarque, P ;
Kernan, PJ ;
Krauss, LM .
ASTROPHYSICAL JOURNAL, 1998, 494 (01) :96-110
[9]  
CHENG YQ, UNPUB
[10]  
COORAY AR, UNPUB