Effect of the cosmological constant on large-scale anisotropies in the microwave background
Journal Article
·
· Sov. Astron. Lett. (Engl. Transl.); (United States)
OSTI ID:5765537
Calculations of the large-scale microwave-background temperature anisotropy induced by flat-spectrum primordial adiabatic perturbations in a flat Friedmann universe with a nonzero cosmological constant ..lambda.. show that the ..lambda..-term helps overcome the difficulties posed by models with cold, weakly interacting particles (axions, gravitinos). In a cold-particle cosmology with the ..lambda..-term, the quadrupole anisotropy diminishes to ..delta..T/Troughly-equal10/sup -5/.
- Research Organization:
- Institute of Astrophysics and Atmospheric Physics, Estonian Academy of Sciences, Toravere
- OSTI ID:
- 5765537
- Journal Information:
- Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 11:5; ISSN SALED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC PROCESSES
ANISOTROPY
COSMOLOGICAL CONSTANT
COSMOLOGICAL MODELS
COSMOLOGY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
MATHEMATICAL MODELS
MICROWAVE RADIATION
PERTURBATION THEORY
RADIATIONS
RELICT RADIATION
TEMPERATURE MEASUREMENT
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC PROCESSES
ANISOTROPY
COSMOLOGICAL CONSTANT
COSMOLOGICAL MODELS
COSMOLOGY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
MATHEMATICAL MODELS
MICROWAVE RADIATION
PERTURBATION THEORY
RADIATIONS
RELICT RADIATION
TEMPERATURE MEASUREMENT