A New Estimate for the Dispersion Velocity of Galactic Dark Matter Particles
ZHU Zong-hong1 , WU Jiang-hua2 , ZHANG Yuan-zhong1
1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
2 Department of Astronomy, Beijing Normal University, Beijing 100875
A New Estimate for the Dispersion Velocity of Galactic Dark Matter Particles
ZHU Zong-hong1 ;WU Jiang-hua2 ;ZHANG Yuan-zhong1
1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
2 Department of Astronomy, Beijing Normal University, Beijing 100875
关键词 ：
95.30.Sf ,
95.35.+d ,
98.62.Gq
Abstract ： An independent method is proposed to estimate the dispersion velocity of galactic dark matter particles. This method is based on the observed quasar-galaxy association samples that are caused by gravitational lensing. All resulting dispersion velocities are much higher than ~220km.s-1 , a value expected from the virial theorem, which shows that the conventional assumption of virialization may be invalid in the halo regions of galaxies.
Key words ：
95.30.Sf
95.35.+d
98.62.Gq
出版日期: 1998-08-01
引用本文:
ZHU Zong-hong;WU Jiang-hua;ZHANG Yuan-zhong. A New Estimate for the Dispersion Velocity of Galactic Dark Matter Particles[J]. 中国物理快报, 1998, 15(8): 617-619.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1998/V15/I8/617
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1998, Vol. 15 
