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

Wei-Hwan Chiang | Zendy; Dongsu Ryu | Zendy; Ethan T. Vishniac | Zendy

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

Author(s) -

Wei-Hwan Chiang,

Dongsu Ryu,

Ethan T. Vishniac

Publication year - 1989

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/167321

Subject(s) - physics , cold dark matter , astrophysics , intergalactic medium , dark matter , astronomy , universe , intergalactic travel , intergalactic dust , hot dark matter , cosmology , dark energy , galaxy , redshift

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.open2

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