Comment on “ The Dispersion Velocity of Galactic Dark Matter Particles ”
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چکیده
Evalyn Gates, Marc Kamionkowski, and Michael S. Turner 1NASA/Fermilab Theoretical Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, IL 60615-0500 Department of Astronomy & Astrophyisics, Enrico Fermi Institute, University of Chicago, Chicago, IL 60637-1433 3Department of Physics, Enrico Fermi Institute, University of Chicago, Chicago, IL 60637-1433 4Department of Physics, Columbia University, 538 West 120th St., New York, New York 10027 (June 1996)
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Comment on the dispersion - velocity of galactic dark matter particles
In a recent Letter, Cowsik, Ratnam and Bhattacharjee (1996a) have built a dynamically self-consistent spatial distribution of particles of galactic dark matter. They have come up with the rather unorthodox conclusion that the mean velocity dispersion of dark matter particles “should be 600 km s or larger”. Their letter triggered immediate comments (Evans 1996, Gates et al. 1996). Here we find, ...
متن کاملThe Dispersion-Velocity of Galactic Dark Matter Particles
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〉1/2 DM , should be ∼ 600 kms−1 or larger. PACS numbers: 95.35 +d, 98.35 -a,...
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