Constraints on a quintessence model from gravitational lensing statistics

被引：0
|
作者：
Sereno, M
机构：
[1] Osserv Astron Capodimonte, Ist Nazl Astrofis, I-80131 Naples, Italy
[2] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
[3] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 356卷 / 03期
关键词：
gravitational lensing; quasars : general; cosmological parameters; cosmology : theory; dark matter;
D O I：
10.1111/j.1365-2966.2004.08507.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Constraints on an exact quintessence scalar-field model with an exponential potential are derived from gravitational lens statistics. An exponential potential can account for data from both optical quasar surveys and radio-selected sources. Based on the Cosmic Lens All-Sky Survey (CLASS) sample, lensing statistics provides, for the pressureless matter density parameter, an estimate of Omega(M0) = 0.31(-0.14)(+0 12).
引用
收藏
页码：937 / 943
页数：7
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