The scale of homogeneity in the Las Campanas redshift survey

• Verfasst von: Amendola, Luca [VerfasserIn]
• Verfasst von: Palladino, Emilia [VerfasserIn]
• Titel: The scale of homogeneity in the Las Campanas redshift survey
• Verf.angabe: Luca Amendola and Emilia Palladino
• Umfang: 4 S.
• Fussnoten: Gesehen am 20.11.2017
• Titel Quelle: Enthalten in: The astrophysical journal / 2
• Jahr Quelle: 1999
• Band/Heft Quelle: 514(1999), 1, S. L1-L4
• ISSN Quelle: 2041-8213
• DOI: doi:10.1086/311936
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565500709

Abstract

We analyze the Las Campanas Redshift Survey using the integrated conditional density (or density of neighbors) in volume-limited subsamples up to unprecedented scales (200 Mpc h -1 ) in order to determine without ambiguity the behavior of the density field. We find that the survey is well described by a fractal up to 20-30 Mpc h -1 but flattens toward homogeneity at larger scales. Although the data are still insufficient to establish with high significance the expected homogeneous behavior, and therefore to rule out a fractal trend to larger scales, a fit with a cold dark matter-like spectrum with high normalization well represents the data.