Published June 1986 | Version v1
Journal article Metadata-only

Large-scale microwave-background anisotropy in unstable-particle cosmologies

Creators

  • 1. Institut Teoreticheskoi Fiziki, Moscow, USSR
  • 2. Institut Astrofiziki i Fiziki Atmosfery, Toravere, Estonian SSR

Description

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

Additional details

Publishing Information

Journal Title
Sov. Astron. Lett. (Engl. Transl.)
Journal Volume
12
Series
Sov. Astron. Lett. (Engl. Transl.).
Journal Page Range
175-179
ISSN
0360-0327
CODEN
SALED

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
18092236
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ANISOTROPY; COSMIC RADIATION; COSMOLOGY; DECAY; ELEMENTARY PARTICLES; NEUTRINOS; RELICT RADIATION; TEMPERATURE DISTRIBUTION
Descriptors DEC
ELECTROMAGNETIC RADIATION; FERMIONS; IONIZING RADIATIONS; LEPTONS; MASSLESS PARTICLES; MICROWAVE RADIATION; RADIATIONS

Optional Information

Notes
Cover-to-cover translation of Pis'ma v Astronomicheskij Zhurnal (USSR).