skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Local gravity and peculiar velocity - Probes of cosmological models

Abstract

The convergence of the peculiar gravitational acceleration of the Local Group deduced from galaxy distribution and its alignment with the microwave background dipole are studied in the framework of linear theory and conditional probability. The acceleration generated in a volume of finite depth for general density fluctuations power spectrum is predicted. This is applied to the cold-dark-matter (CDM) and isocurvature baryon (PIB) family of models. The results are compared with IRAS and optical flux and redshift dipoles. The CDM predictions are in good agreement with the observations, while the PIB models show a wide range of behavior depending on the choice of parameters, Omega(b), h, and n. It is concluded that the alignment and convergence provide a useful discriminator between competing theories. 15 refs.

Authors:
; ;  [1]
  1. Institute for Advanced Study, Princeton, NJ (USA) Toronto Univ. (Canada) Technion - Israel Institute of Technology, Haifa (Israel)
Publication Date:
OSTI Identifier:
6865042
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal; (USA)
Additional Journal Information:
Journal Volume: 352; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGICAL MODELS; PROBES; ACCELERATION; ALIGNMENT; FOURIER TRANSFORMATION; GALAXIES; GALAXY CLUSTERS; GRAVITATION; INFRARED RADIATION; NONLUMINOUS MATTER; RED SHIFT; RELICT RADIATION; SATELLITES; SPATIAL DISTRIBUTION; DISTRIBUTION; ELECTROMAGNETIC RADIATION; INTEGRAL TRANSFORMATIONS; MATHEMATICAL MODELS; MICROWAVE RADIATION; RADIATIONS; TRANSFORMATIONS; 640106* - Astrophysics & Cosmology- Cosmology

Citation Formats

Lahav, O, Kaiser, N, and Hoffman, Y. Local gravity and peculiar velocity - Probes of cosmological models. United States: N. p., 1990. Web. doi:10.1086/168550.
Lahav, O, Kaiser, N, & Hoffman, Y. Local gravity and peculiar velocity - Probes of cosmological models. United States. https://doi.org/10.1086/168550
Lahav, O, Kaiser, N, and Hoffman, Y. 1990. "Local gravity and peculiar velocity - Probes of cosmological models". United States. https://doi.org/10.1086/168550.
@article{osti_6865042,
title = {Local gravity and peculiar velocity - Probes of cosmological models},
author = {Lahav, O and Kaiser, N and Hoffman, Y},
abstractNote = {The convergence of the peculiar gravitational acceleration of the Local Group deduced from galaxy distribution and its alignment with the microwave background dipole are studied in the framework of linear theory and conditional probability. The acceleration generated in a volume of finite depth for general density fluctuations power spectrum is predicted. This is applied to the cold-dark-matter (CDM) and isocurvature baryon (PIB) family of models. The results are compared with IRAS and optical flux and redshift dipoles. The CDM predictions are in good agreement with the observations, while the PIB models show a wide range of behavior depending on the choice of parameters, Omega(b), h, and n. It is concluded that the alignment and convergence provide a useful discriminator between competing theories. 15 refs.},
doi = {10.1086/168550},
url = {https://www.osti.gov/biblio/6865042}, journal = {Astrophysical Journal; (USA)},
issn = {0004-637X},
number = ,
volume = 352,
place = {United States},
year = {Sun Apr 01 00:00:00 EST 1990},
month = {Sun Apr 01 00:00:00 EST 1990}
}