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Direct evidence of acceleration from a distance modulus-redshift graph
Gong, Yungui; Wang, Anzhong; Wu, Qiang; Zhang, Yuan-Zhong; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
2007
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
期号8页码:-
摘要The energy conditions give upper bounds on the luminosity distance. We apply these upper bounds to the 192 ESSENCE supernova Ia data to show that the Universe has experienced accelerated expansion. This conclusion is drawn directly from the distance modulus - redshift graph. In addition to being a very simple method, this method is also totally independent of any cosmological model. From the degeneracy of the distance modulus at low redshift, we argue that the choice of omega(0) for probing the property of dark energy is misleading. One explicit example is used to support this argument.
部门归属Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China; Baylor Univ, GCAP CASPER, Dept Phys, Waco, TX 76798 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Dark Energy Cosmological Constant Cosmic Acceleration Supernova Constraints Universe Model Probe Reconstruction Quintessence
学科领域Physics
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收录类别SCI
WOS记录号WOS:000249222000007
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5685
专题理论物理所1978-2010年知识产出
通讯作者Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
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Gong, Yungui,Wang, Anzhong,Wu, Qiang,et al. Direct evidence of acceleration from a distance modulus-redshift graph[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2007(8):-.
APA Gong, Yungui,Wang, Anzhong,Wu, Qiang,Zhang, Yuan-Zhong,&Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.(2007).Direct evidence of acceleration from a distance modulus-redshift graph.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),-.
MLA Gong, Yungui,et al."Direct evidence of acceleration from a distance modulus-redshift graph".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2007):-.
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