Dynamics of voids and their shapes in redshift space

Kei Ichi Maeda, Nobuyuki Sakai, Roland Triay

研究成果: Article

6 引用 (Scopus)


We investigate the dynamics of a single spherical void embedded in a Friedmann-Lematre 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 along 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.

ジャーナルJournal of Cosmology and Astroparticle Physics
出版物ステータスPublished - 2011 8 1

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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