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astro-ph2001★ 13 cited
The large-scale rms bulk velocity estimated from QSOs' Ly forests
Hu Zhan, Li-Zhi Fang
We propose a method for estimating the large-scale rms bulk velocity of the cosmic mass field from the transmitted fluxes of Ly forests. It is based on two linear relationships…
astro-ph2001★ 14 cited
The local power spectrum and correlation hierarchy of the cosmic mass field
Hu Zhan, Priya Jamkhedkar, Li-Zhi Fang
We analyze the power spectrum of a QSO's Ly_alpha transmitted flux in the discrete wavelet transform (DWT) representation. Although the mean DWT power spectrum is consistent with i…