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题名: Direct evidence of acceleration from a distance modulus-redshift graph
作者: Gong, Yungui ;  Wang, Anzhong ;  Wu, Qiang ;  Zhang, Yuan-Zhong
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2007
期号: 8, 页码:-
关键词: DARK ENERGY ;  COSMOLOGICAL CONSTANT ;  COSMIC ACCELERATION ;  SUPERNOVA ;  CONSTRAINTS ;  UNIVERSE ;  MODEL ;  PROBE ;  RECONSTRUCTION ;  QUINTESSENCE
学科分类: Physics
通讯作者: Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000249222000007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5685
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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):-.
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