Cooling mechanisms in the primordial medium

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Sov. Astron. Lett. (Engl. Transl.); (United States)

OSTI ID:6469402

Shchekinov, Y A; Edel'man, M A

Calculations are made for the abundance of H/sub 2/ molecules and H/sub 2//sup +/ ions in primordial matter, and for the efficiency with which they would have cooled hot (Tapprox. =10/sup 4/ /sup 0/K) protogalactic gas. The main contribution to the cooling comes from the H/sub 2/. The influence of the background radiation emanating from protoclusters of galaxies upon the H/sub 2/ and H/sub 2//sup +/ abundance is calculated. H/sub 2/ molecules would have been formed in sufficient quantity when z=2--3 if the protogalactic gas density was of order 10 cm/sup -3/.

• Research Organization: Scientific Research Institute, Rostov University
• OSTI ID: 6469402
• Journal Information: Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 4:5; ISSN SALED
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CHARGED PARTICLES
CHEMISTRY
COSMOCHEMISTRY
COSMOLOGICAL MODELS
COSMOLOGY
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
GALACTIC EVOLUTION
GALAXIES
HYDROGEN
HYDROGEN IONS
IONS
MATHEMATICAL MODELS
MILKY WAY
NONMETALS