Dynamics of Void and its Shape in Redshift Space

Дата и время публикации : 2011-03-10T12:16:20Z

Авторы публикации и институты :
Kei-ichi Maeda
Nobuyuki Sakai
Roland Triay

Ссылка на журнал-издание: JCAP 08 (2011) 026
Коментарии к cтатье: 19 pages, 11 figures
Первичная категория: astro-ph.CO

Все категории : astro-ph.CO

Краткий обзор статьи: 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.

Category: Physics