Dynamics of Void and its Shape in Redshift Space
| Autor: | Maeda, Kei-ichi, Sakai, Nobuyuki, Triay, Roland |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | JCAP 08 (2011) 026 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1475-7516/2011/08/026 |
| Popis: | 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. Comment: 19 pages, 11 figures |
| Databáze: | arXiv |
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