Primordial-particle background in the universe, and fine-scale anisotropy in the cosmic microwave radiation

Journal Article · Sun May 01 00:00:00 EDT 1983 · Sov. Astron. (Engl. Transl.); (United States)

OSTI ID:5463086

Zabotin, N A; Nasel'skii, P D

The correlation properties of the fine-scale angular fluctuations in the temperature of the cosmic microwave background, as generated by pregalactic adiabatic irregularities in the primordial plasma during the hydrogen recombination era, are calculated on the premise that massive gravitating particles (neutrinos, black holes, stable heavy leptons) dominated the density in the early universe. If this cosmological hidden mass has a density equal to (10--100)% of the critical density and the matter density rho/sub m/roughly-equal(1.4--5) x 10/sup -31/ g/cm/sup 3/, then the microwave radiation should exhibit rms temperature fluctuations of (8--4) x 10/sup -6/ (1+z/sub s/), where z/sub s/ denotes the epoch when the irregularities reach their nonlinear regime and structure begins to develop. The fluctuations will have a characteristic correlation scale of 10--30'.

• Research Organization: Institute of Physics, Rostov University
• OSTI ID: 5463086
• Journal Information: Sov. Astron. (Engl. Transl.); (United States), Vol. 27:3
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
ANISOTROPY
FLUCTUATIONS
BLACK HOLES
COSMIC NEUTRINOS
COSMOLOGY
DENSITY
LEPTONS
MASS
MICROWAVE RADIATION
PLASMA
RECOMBINATION
COSMIC RADIATION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
MASSLESS PARTICLES
NEUTRINOS
PHYSICAL PROPERTIES
RADIATIONS
VARIATIONS
640101* - Astrophysics & Cosmology- Cosmic Radiation