Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371l..47m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 371, April 20, 1991, p. L47-L49.
Astronomy and Astrophysics
Astrophysics
6
Bosons, Cosmology, Dark Matter, Galactic Evolution, Particle Mass, Degrees Of Freedom, Neutrinos, Relativistic Effects, Temperature Dependence
Scientific paper
An alternative hot dark matter scenario which considers low-mass bosons rather than neutrinos is suggested which has much more small-scale power than the neutrino hot dark matter model while keeping the power peak at large scales comparable to the comoving length scale set by neutrino free-streaming. The reason is that, for a given particle mass, the Bose-Einstein distribution has more low-velocity particles than the corresponding Fermi-Dirac distribution. Therefore, an appreciable fraction of particles stay close to their initial positions, so that even though the mean free-streaming length is similar to that for neutrinos, a fair amount of power survives on small scales.
No associations
LandOfFree
Bosons - Hot dark matter with small-scale power does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Bosons - Hot dark matter with small-scale power, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bosons - Hot dark matter with small-scale power will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1790578