Massive neutrinos in large-scale gravitational clustering

Journal Article · Sat Jan 01 00:00:00 EST 1983 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160574· OSTI ID:6268488

Melott, A L

A large-scale simulation is made of the plane-symmetric collapse of massive neutrinos. It is found that a condensation forms in the central plane with high mass density, a velocity dispersion much lower than the mean value, and a phase space density which is nearly equal over a large region to the maximum of the original distribution. The coarse-grain average phase space density over the central megaparsec is comfortably higher than that for an extended galactic halo. It is concluded that there is no obstacle to the formation of massive neutrino galactic halos in the neutrino variant of the adiabatic theory of galaxy formation, because a population of neutrinos arises which may easily be bound into galactic halos. The calculations, with the exception of the thermal broadening, will apply to any system of collisionless particles.

• Research Organization: Center for Relativity Theory, Department of Physics, The University of Texas at Austin
• OSTI ID: 6268488
• Journal Information: Astrophys. J.; (United States), Vol. 264:1
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC NEUTRINOS
GRAVITATIONAL COLLAPSE
REST MASS
COSMOLOGICAL MODELS
SIMULATION
GALAXIES
MORPHOLOGY
DISTURBANCES
EQUATIONS OF MOTION
ONE-DIMENSIONAL CALCULATIONS
PHASE SPACE
RED SHIFT
COSMIC RADIATION
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
IONIZING RADIATIONS
LEPTONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICAL SPACE
NEUTRINOS
PARTIAL DIFFERENTIAL EQUATIONS
RADIATIONS
SPACE
640105* - Astrophysics & Cosmology- Galaxies