Dispersion Velocity of Galactic Dark Matter Particles

R. Cowsik; Charu Ratnam; P. Bhattacharjee

doi:10.1103/PhysRevLett.76.3886

Dispersion Velocity of Galactic Dark Matter Particles

R. Cowsik, Charu Ratnam, and P. Bhattacharjee

Phys. Rev. Lett. 76, 3886 – Published 20 May 1996

Abstract

The self-consistent spatial distribution of particles of galactic dark matter is derived including their own gravitational potential, as also of that of the visible matter of the Galaxy. In order to reproduce the observed rotation curve of the Galaxy the value of the dispersion velocity of the dark matter particles, $〈 v^{2} 〉_{DM}^{1 / 2}$ should be $\sim 600 km s^{- 1}$ or larger.

Received 3 April 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.3886

Authors & Affiliations

R. Cowsik^1,2,3, Charu Ratnam^1,4, and P. Bhattacharjee¹

¹Indian Institute of Astrophysics, Koramangala, Bangalore 560 034, India
²McDonnell Center for Space Sciences, Washington University, St. Louis, Missouri 63130
³Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400 005, India
⁴Joint Astronomy Program, Indian Institue of Science, Bangalore 560 012, India