Open AccessLinear redshift distortions and power in the IRAS Point Source Catalog Redshift Survey
Author(s) -
Hamilton A. J. S.,
Tegmark Max,
Padmanabhan Nikhil
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03888.x
Subject(s) - physics , redshift , astrophysics , galaxy , redshift survey , distortion (music) , peculiar velocity , spectral density , spectral line , redshift space distortions , astronomy , statistics , amplifier , mathematics , optoelectronics , cmos
We present a state‐of‐the‐art linear redshift distortion analysis of the recently published IRAS Point Source Catalog Redshift Survey (PSC z ). The procedure involves linear compression into 4096 Karhunen–Loève (signal‐to‐noise) modes culled from a potential pool of ∼3×10 5 modes, followed by quadratic compression into three separate power spectra, the galaxy–galaxy, galaxy–velocity and velocity–velocity power spectra. Least squares‐fitting to the decorrelated power spectra yields a linear redshift distortion parameter