6 papers
CWTHF: Subhalo Identification with Continuous Wavelet Transform
Minxing Li, Yun Wang, Ping He
With advances in cosmology and computer science, cosmological simulations now resolve structures in increasingly fine detail. As key tracers of hierarchical structure formation, su…
Local Nonlinear Transforms Effectively Extract Cosmological Information From Large-Scale Structure
Yun Wang, Hao-Ran Yu, Yu Yu +1
Extracting cosmological information from nonlinear and non-Gaussian large-scale structure remains a major challenge. We introduce the (Zel'dovich-inspired) ZI transform, a simple o…
The dynamical and thermodynamic effects of turbulence on the cosmic baryonic fluid
Yun Wang, Minxing Li, Ping He
Both simulations and observations indicate that the so-called missing baryons reside in the intergalactic medium known as the warm-hot intergalactic medium (WHIM). In this study we…
Precision calculation of the EFT likelihood with primordial non-Gaussianities
Ji-Yuan Ke, Yun Wang, Ping He
We perform a precision calculation of the effective field theory (EFT) conditional likelihood for large-scale structure (LSS) using the saddle-point expansion method in the presenc…
Calculating the EFT likelihood via saddle-point expansion
Ji-Yuan Ke, Yun Wang, Ping He
In this paper, we extend the functional approach for calculating the EFT likelihood by applying the saddle-point expansion. We demonstrate that, after suitable reformulation, the l…
Capturing primordial non-Gaussian signatures in the late Universe by multi-scale extrema of the cosmic log-density field
Yun Wang, Ping He
We construct two new summary statistics, the scale-dependent peak height function (scale-PKHF) and the scale-dependent valley depth function (scale-VLYDF) of matter density, and fo…