Constraints on Deceleration Parameter of a 5D Bounce Cosmological Model from Recent Cosmic Observations  

作　　者：李杰超 徐立昕 吕剑波 常葆荣 刘宏亚 

机构地区：[1]School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024

出　　处：《Chinese Physics Letters》2008年第2期802-804,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10573003, 10647110, 10703001 and 10747113 DUT （893326）, and the National Basic Research Programme of China under Grant No 2003CB716300.

摘　　要：We study the constraint on deceleration parameter q from the recent SNela Gold dataset and observational Hubble data by using a model-independent deceleration parameter q（z） = 1/2 - a/（1 ＋ z）^b under the flve-dimensional bounce cosmological model. For the cases of SNeIa Gold dataset, Hubble data, and their combination, the present results show that the constraints on transition redshift ZT are 0.35-0.07^＋0.14,0.68-0.58^＋1.47,and 0.55-0.09^＋0.18 with 1σ errors,respectively.We study the constraint on deceleration parameter q from the recent SNela Gold dataset and observational Hubble data by using a model-independent deceleration parameter q（z） = 1/2 - a/（1 ＋ z）^b under the flve-dimensional bounce cosmological model. For the cases of SNeIa Gold dataset, Hubble data, and their combination, the present results show that the constraints on transition redshift ZT are 0.35-0.07^＋0.14,0.68-0.58^＋1.47,and 0.55-0.09^＋0.18 with 1σ errors,respectively.

关 键 词：PROBE WMAP OBSERVATIONS HUBBLE-SPACE-TELESCOPE DARK ENERGY BIG BOUNCE CONSTANT QUINTESSENCE ANISOTROPY SUPERNOVA EVOLUTION REDSHIFT 

分 类 号：P159[天文地球—天文学]