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	Hubble expansion is not a velocity
	Ma,Yin-Zhe1,2; Zhang,Shuang-Nan3,4
刊名	Physics education
	2016-09-27
卷号	51期号:6
ISSN号	0031-9120
DOI	10.1088/0031-9120/51/6/065011
英文摘要	Abstract in this paper, we clarify the difference between the hubble expansion and the doppler shift pedagogically and illustrate both physically and mathematically why the hubble expansion cannot be regarded as a velocity. therefore, we suggest to replace the misleading word ‘recession velocity’ to be ‘hubble recession’ to describe the cosmic expansion. we further derive how the peculiar velocity of a galaxy is related to its observed redshift and proper distance, which has practical use in the galaxy redshift and distance surveys.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0031-9120-51-6-065011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2175683
专题	高能物理研究所
作者单位	1.School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa 2.Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK 3.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, CAS, 19B Yuquan Road, Beijing 100049, People’s Republic of China 4.National Astronomy Observatories, Chinese Academy of Science, A20 Datun Road, Chaoyang District, Beijing, People’s Republic of China
推荐引用方式 GB/T 7714	Ma,Yin-Zhe,Zhang,Shuang-Nan. Hubble expansion is not a velocity[J]. Physics education,2016,51(6).
APA	Ma,Yin-Zhe,&Zhang,Shuang-Nan.(2016).Hubble expansion is not a velocity.Physics education,51(6).
MLA	Ma,Yin-Zhe,et al."Hubble expansion is not a velocity".Physics education 51.6(2016).

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