Dispersion Velocity of Galactic Dark Matter Particles

1996/04/30 by R. Cowsik, Charu Ratnam, Pijushpani Bhattacharjee +1 · 1 citation
Physics and Astronomy · #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Dark matter halo #Dispersion (optics) #Galaxy #Galaxy formation and evolution #Galaxy rotation curve #Gravitational potential #Hot dark matter #Physics #Quantum mechanics #Scientific Research and Discoveries #Velocity dispersion #astro-ph #hep-ph

paper · pdf · doi:10.1103/physrevlett.76.3886

published as Phys.Rev.Lett. 76 (1996) 3886-3889 · RevTex, 4 pages, 1 ps figure, accepted for publication in Physical Review Letters

arxiv created 1996/04/30 · openalex publication_date 1996/05/20 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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, 〈v²〉_DM^1/2 should be \ensuremath∼600kms^\ensuremath-1 or larger.

Citations

• A Numerical Study of the Stability of Flattened Galaxies: or, can Cold Galaxies Survive?
• Detection of Cosmic Dark Matter

Cited by

• Galactic halo models and particle dark-matter detection