62 citations · 99 across the 5 of their papers we have counts for
5 papers · 1 filter
Efficient estimators for power spectrum and bispectrum multipole measurements
Yunchen Xie, Ruiyang Zhao, Gan Gu +6
Large galaxy surveys demand fast and scalable estimators for anisotropic clustering statistics beyond the monopole. We present a suite of efficient FFT-based estimators for power-s…
Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements
Gan Gu, Xiaoma Wang, Yuting Wang +57
Understanding whether cosmic acceleration arises from a cosmological constant or a dynamical component is a central goal of cosmology, and the Dark Energy Spectroscopic Instrument…
Dynamical dark energy in light of cosmic distance measurements II: a study using current observations
Xiaoma Wang, Gan Gu, Xiaoyong Mu +2
We extract key information of dark energy from current observations of BAO, OHD and , and find hints of dynamical behaviour of dark energy. In particular, a dynamical dark ene…
Dynamical dark energy in light of cosmic distance measurements I: a demonstration using simulated datasets
Gan Gu, Xiaoma Wang, Xiaoyong Mu +2
We develop methods to extract key dark energy information from cosmic distance measurements including the BAO scales and supernovae luminosity distances. Demonstrated using simulat…
Non-parametric dark energy reconstruction using the tomographic Alcock-Paczynski test
Zhenyu Zhang, Gan Gu, Xiaoma Wang +7
The tomographic Alcock-Paczynski (AP) method can result in tight cosmological constraints by using small and intermediate clustering scales of the large scale structure (LSS) of th…