Emulating Power Spectra for Prereconstructed and Postreconstructed Galaxy Samples
Yuting Wang,
Ruiyang Zhao,
Zhongxu Zhai
et al.
Abstract:The small-scale linear information in galaxy samples typically lost during nonlinear growth can be restored to a certain level by the density field reconstruction, which has been demonstrated for improving the precision of the baryon acoustic oscillation (BAO) measurements. As proposed in the literature, a joint analysis of the power spectrum before and after the reconstruction enables an efficient extraction of information carried by high-order statistics. However, the statistics of the postreconstruction den… Show more
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