Dynamics of Void and its Shape in Redshift Space
Cosmology and Nongalactic Astrophysics
2015-03-19 v1
Abstract
We investigate the dynamics of a single spherical void embedded in a Friedmann-Lema\^itre universe, and analyze the void shape in the redshift space. We find that the void in the redshift space appears as an ellipse shape elongated in the direction of the line of sight (i.e., an opposite deformation to the Kaiser effect). Applying this result to observed void candidates at the redshift z~1-2, it may provide us with a new method to evaluate the cosmological parameters, in particular the value of a cosmological constant.
Keywords
Cite
@article{arxiv.1103.2007,
title = {Dynamics of Void and its Shape in Redshift Space},
author = {Kei-ichi Maeda and Nobuyuki Sakai and Roland Triay},
journal= {arXiv preprint arXiv:1103.2007},
year = {2015}
}
Comments
19 pages, 11 figures