Formation of galaxies and large-scale structure with cold dark matter

  title={Formation of galaxies and large-scale structure with cold dark matter},
  author={George R. Blumenthal and S. M. Faber and Joel R. Primack and Martin J. Rees},
The dark matter that appears to be gravitationally dominant on all scales larger than galactic cores may consist of axions, stable photinos, or other collisionless particles whose velocity dispersion in the early Universe is so small that fluctuations of galactic size or larger are not damped by free streaming. An attractive feature of this cold dark matter hypothesis is its considerable predictive power: the post-recombination fluctuation spectrum is calculable, and it in turn governs the… 
Galaxy Formation in the Cold Dark Matter Cosmogony
The formation of dark galactic halos in the cold dark matter cosmogony can be studied using high resolution N-body simulations. Galactic halos are predicted to form at relatively recent epochs with
Although the hypothesis of cold dark matter with a Zeldovich spectrum of primordial Gaussian fluctuations appears to give a picture of galaxy and cluster formation that is in reasonably good
The Formation and Evolution of Galaxies
Prior to the recombination epoch, matter and radiation were tightly coupled in the post big-bang plasma. Given the large ratio of photons to baryons, matter felt significant pressure from Thompson
Collapsed Dark Matter Structures.
It is shown that a simple model where dark matter is charged under a "dark electromagnetism" can allow dark matter to form gravitationally collapsed objects with characteristic mass scales much smaller than that of a Milky-Way-type galaxy.
Primordial density fluctuations and the structure of galactic haloes
N-body models used to study the formation of structure in Ω = 1 universes reveal that the mass profiles of the collapsed structures—galactic haloes—are intimately related to the power spectrum of
Microwave background fluctuations and dark matter
  • G. Efstathiou, J. Bond
  • Physics
    Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
  • 1986
Scale-invariant perturbations of the microwave background provide strong constraints on theories of galaxy formation which incorporate non-baryonic dark matter, and the statistics of the radiation pattern may provide a useful test of the Gaussian nature of the fluctuations.
Experimental Galaxy Formation
We present results from two-fluid numerical simulations modelling the formation of galaxies and larger structure in a 16 Mpc-periodic volume of a flat, cold dark matter universe with baryon fraction
Cold dark matter, the structure of galactic haloes and the origin of the Hubble sequence
A popular theory for galaxy formation holds that the Universe is dominated by exotic particles such as axions, photinos or gravitinos (collectively known as cold dark matter, CDM)1–3. This hypothesis


Formation of galaxies in a gravitino-dominated universe
If gravitinos of mass 1 keV (or similar particles) dominate the mass of the universe, a critical scale of galactic size arises due to their collisionless phase mixing. It is shown that density
How galaxies acquire their neutrino haloes
One-dimensional simulations of the nonlinear growth of structure in a universe dominated by a population of nonrelativistic collisionless particles such as massive neutrinos show that a subpopulation
Dark Matter, Galaxies, Superclusters and Voids
Two surprising facts of fundamental importance for understanding the large scale structure of the universe have become apparent in the last few years. The first is that most of the mass in the
Axions and the evolution of structure in the universe
A scenario where axions provide the dark matter in the universe is considered. Fluctuations in the axion field density produced by domain walls and strings cause the appearance of 'axion clumps' of
Massive neutrinos and the large-scale structure of the Universe
If neutrinos dominate the mass density of the Universe, they play a critical role in the gravitational instability theory of galaxy formation. For neutrinos of mass 30m/sub 30/ eV, a maximum Jeans
Heating of Stellar Disks by Massive Objects
I consider the possibility that the heating of stellar disks may be due to scattering of the stars by massive objects, either giant molecular clouds in the disk or massive black holes in the galactic
Some implications of nonluminous matter in dwarf spheroidal galaxies.
Strong constraints are placed on the nature of nonluminous matter if it dominates the gravitational potential of dwarf spheroidal galaxies. In particular, the phase-space constraint in small galaxies
The structure of clusters of galaxies observed with Einstein
Imaging observations from the Einstein Observatory are used to determine properties of galactic clusters and the intracluster gas. The hydrostatic-isothermal gas model is applied to obtain the
Cluster analysis of the nonlinear evolution of large-scale structure in an axion/gravitino/photino-dominated universe
The authors consider nonlinear evolution of the inflationary scale-free spectrum of adiabatic density perturbations in (1) a neutrino-dominated universe (sharp short-wavelength cutoff), and (2) an