Primordial helium production by pregalactic accreting black holes

Journal Article · Tue Jan 31 23:00:00 EST 1989 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/167130· OSTI ID:6017985

Jin, Liping

The possibility that the observed cosmic helium abundance might have been produced by accretion onto pregalactic black holes is examined. It is shown that the fraction of material processed around accreting black holes could be large enough to generate the observed helium abundance, and that the accretion rate could allow three types of accretion, namely radiation-supported torus, thin disk, and ion-supported torus. Significant hydrogen burning could occur in the accretion region. A plausible scenario for the production of helium, deuterium, lithium, and possibly the initial metal enrichment of galaxies in the accretion region around the black holes is proposed. 51 references.

• Research Organization: Chicago Univ., IL (USA)
• OSTI ID: 6017985
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 337; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ACCRETION DISKS
BLACK HOLES
CHEMICAL COMPOSITION
CHEMISTRY
COSMOCHEMISTRY
COSMOLOGY
DEUTERIUM
ELEMENTS
FLUIDS
GASES
HELIUM
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONLUMINOUS MATTER
NONMETALS
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
RARE GASES
STABLE ISOTOPES
STAR ACCRETION
STAR EVOLUTION
SYNTHESIS
UNIVERSE