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Quadrupole power spectra for the 2dF QSO redshift survey

Image Credit: Yamamoto, Nakamichi, Kamino, Bassett and Nishioka

Quadrupole power spectra for the 2dF QSO redshift survey measured with our algorithm. Anisotropic nature due to the redshift-space distortions can be seen although it is noisy (Yamamoto, Nakamichi, Kamino, Bassett & Nishioka 2006, PASJ 58, 93). The best-f

With the large amount of survey data at hand, we have developed a method to quantify the anisotropy of the galaxy distribution with the multipole moment of the power spectrum. We applied this method to the sample of the 2dF QSO redshift survey, and detected the signature of the redshift-space distortions though the quadrupole power spectrum.