Large-scale microwave-background anisotropy in unstable-particle cosmologies
Journal Article
·
· Sov. Astron. Lett. (Engl. Transl.); (United States)
OSTI ID:6166905
The large-scale temperature anisotropy DeltaT/T that would be induced in the cosmic background radiation by initially flat-spectrum adiabatic perturbations in a flat Friedmann universe containing massive but unstable particles will have a multipole structure quite different from what is predicted by the cold-particle and standard neutrino models. Experimental upper limits on DeltaT/T for 6-180 deg angular scales constrain the era of neutrino (or gravitino) decay to redshifts less than 3-4. 28 references.
- Research Organization:
- Institut Astrofiziki i Fiziki Atmosfery, Toravere, Estonian SSR; Institut Teoreticheskoi Fiziki, Moscow, USSR
- OSTI ID:
- 6166905
- Journal Information:
- Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 12; 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
ANISOTROPY
COSMIC RADIATION
COSMOLOGY
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MICROWAVE RADIATION
NEUTRINOS
RADIATIONS
RELICT RADIATION
TEMPERATURE DISTRIBUTION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
COSMIC RADIATION
COSMOLOGY
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
IONIZING RADIATIONS
LEPTONS
MASSLESS PARTICLES
MICROWAVE RADIATION
NEUTRINOS
RADIATIONS
RELICT RADIATION
TEMPERATURE DISTRIBUTION