Evolution of the intergalactic medium in a cold dark matter-dominated universe

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/167321· OSTI ID:5851676

Chiang, Weihwan; Ryu, Dongsu; Vishniac, E T

The evolution of the intergalactic medium (IGM) in a cold dark matter-dominated universe is studied. The dark matter is approximated as a pressureless ideal fluid while the IGM is approximated as an ordinary fluid. Several three-dimensional numerical simulations were carried out to trace the evolution of the model universe from z of about 100 to the present time. It is found that the growth of the rms density fluctuations in the IGM is greatly reduced during the period of heating, but it picks up at late times as gravity dominates again. 28 refs.

• Research Organization: Texas Univ., Austin (USA)
• OSTI ID: 5851676
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 339; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ASTROPHYSICS
COSMOLOGY
DENSITY
FLUIDS
GALACTIC EVOLUTION
GALAXIES
HEATING
INTERGALACTIC SPACE
LYMAN LINES
NONLUMINOUS MATTER
PHYSICAL PROPERTIES
SPACE
SPECTRA
THREE-DIMENSIONAL CALCULATIONS
UNIVERSE