中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 院士文集  > 陆埮  > 期刊论文
题名: The effects of parametrization of the dark energy equation of state
作者: Shi, Ke1, 2; Huang, Yong-Feng1, 2; Lu Tan(陆埮)3, 4
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2011-12-01
卷号: 11, 期号:12, 页码:1403-1412
关键词: cosmology: observations ; cosmology: cosmological parameters
学科分类: Astronomy & Astrophysics
文章类型: Article
英文摘要: We investigate in detail the influence of parametrizations of the dark energy equation of state on reconstructing dark energy geometrical parameters, such as the deceleration parameter q(z) and Om diagnostic. We use a type Ia supernova sample, baryon acoustic oscillation data, cosmic microwave background information along with twelve observational Hubble data points to constrain cosmological parameters. With the joint analysis of these current datasets, we find that the parametrizations of w(z) have little influence on the reconstruction result of q(z) and OM. The same is true for the transition (cosmic deceleration to acceleration) redshift z(t), for which we find that for different parametrizations of w(z), the best fitted values of zt are very close to each other (about 0.65). All of our results are in good agreement with the ACDM model. Furthermore, using the combination of datasets, we do not find any signal of decreasing cosmic acceleration as suggested in some recent papers. The results suggest that the influence of the prior w(z) is not as severe as one may anticipate, and thus we can, to some extent, safely use a reasonable parametrization of w(z) to reconstruct some other dark energy parameters (e.g. q(z), Om) with a combination of datasets.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: PROBE WMAP OBSERVATIONS ; COSMOLOGICAL CONSTANT ; QUINTESSENCE ; SUPERNOVAE ; REDSHIFT ; CONSTRAINTS ; PARAMETERS ; COMPONENT ; DYNAMICS ; UNIVERSE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000298341000003
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/11051
Appears in Collections:陆埮_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
180-2011-RAA-ShiHuangLu-The effects of parametrization of the dark energy equation of state 11-1403-1412.pdf(151KB)----开放获取View Download

作者单位: 1.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China

Recommended Citation:
时 珂、黄永锋、陆 埮.The effects of parametrization of the dark energy equation of state,Res. Astron. Astrophys.,2011,11(1403-1412):
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Shi, Ke]'s Articles
[Huang, Yong-Feng]'s Articles
[Lu, Tan]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Shi, Ke]‘s Articles
[Huang, Yong-Feng]‘s Articles
[Lu, Tan]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 180-2011-RAA-ShiHuangLu-The effects of parametrization of the dark energy equation of state 11-1403-1412.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院紫金山天文台 - Feedback
Powered by CSpace