圖片來源: 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
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