6533b820fe1ef96bd12790cf
RESEARCH PRODUCT
The non-Gaussian distribution of galaxies gravitational fields
Wlodzimierz GodlowskiVladimir Stephanovichsubject
galaxies: general — galaxies: formationAngular momentumCosmology and Nongalactic Astrophysics (astro-ph.CO)GaussianFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencessymbols.namesakeGravitational field0103 physical sciences010303 astronomy & astrophysicsChandrasekhar limitGalaxy clusterAstrophysics::Galaxy AstrophysicsPhysics010308 nuclear & particles physicsAstronomy and AstrophysicsAstrophysics - Astrophysics of GalaxiesGalaxyDistribution functionSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)symbolsMultipole expansionAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
We perform a theoretical analysis of the observational dependence between angular momentum of the galaxy clusters and their mass (richness), based on the method introduced in our previous paper. For that we obtain the distribution function of astronomical objects (like galaxies and/or smooth halos of different kinds) gravitational fields due to their tidal interaction. Within the statistical method of Chandrasekhar we are able to show that the distribution function is determined by the form of interaction between objects and for multipole (tidal) interaction it is never Gaussian. Our calculation permits to demonstrate how the alignment of galaxies angular momenta depend on the cluster richness. The specific form of the corresponding dependence is due to assumptions made about cluster morphology. Our approach also predicts the time evolution of stellar objects angular momenta within CDM and $\Lambda$CDM models. Namely, we have shown that angular momentum of galaxies increases with time.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-11-29 |