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astro-ph.CO2024
Modelling the covariance matrix for the power spectra before and after the BAO reconstruction
Ruiyang Zhao, Kazuya Koyama, Yuting Wang +1
The baryon acoustic oscillation (BAO) reconstruction plays a crucial role in cosmological analysis for spectroscopic galaxy surveys because it can make the density field effectivel…
astro-ph.CO2024
Emulating power spectra for pre- and post-reconstructed galaxy samples
Yuting Wang, Ruiyang Zhao, Zhongxu Zhai +10
The small-scale linear information in galaxy samples typically lost during non-linear growth can be restored to a certain level by the density field reconstruction, which has been…