Collapse of the Primordial Gas Clouds in the Presence of UV Radiation Field

Details Collapse of the Primordial Gas Clouds in the Presence of UV Radiation Field Collapse of the Primordial Gas Clouds in the Presence of UV Radiation Field

2006-12-04

arxiv.org/abs/astro-ph/0612071v1

Astronomy and Astrophysics

Astrophysics

To appear in the proceedings of the Island Universes conference held in Terschelling, Netherlands, July 2005, ed. R. de Jong

Scientific paper

Our goal is to study the effects of the UV radiation from the first stars, quasars and hypothetical Super Heavy Dark Matter (SHDM) particle decays on the formation of primordial bound objects in the Universe. We trace the evolution of a spherically symmetric density perturbation in the Lambda Cold Dark Matter and MOND model, solving the frequency-dependent radiative transfer equation, non-equilibrium chemistry, and one-dimensional gas hydrodynamics. We concentrate on the destruction and formation processes of the $H_{2}$ molecule, which is the main coolant in the primordial objects.

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