4 papers
Reconstruction of dark energy using DESI DR2
Xue Zhang, Yin-Hao Xu, Yu Sang
Using a model-independent Gaussian process (GP) method to reconstruct the dimensionless luminosity distance and its derivatives, we derive the evolution of the dimensionless Hu…
Cosmological Forecasts from the Baryon Acoustic Oscillations in 21cm Intensity Mapping
Benjamin Ostergaard, André Alencar da Costa, Yu Sang
In this work we use a template method to extract the scale associated with the Baryon Acoustic Oscillation (BAO) signal in 21cm neutral hydrogen intensity maps. We then forecast th…
The BINGO/ABDUS Project: Forecast for cosmological parameters from a mock Fast Radio Bursts survey
Xue Zhang, Yu Sang, Gabriel A. Hoerning +15
There are various surveys that will provide excellent data to search for and localize Fast Radio Bursts (FRBs). The BINGO project will be one such survey, and this collaboration ha…
Nonlinear dynamics of oscillons and transients during preheating after single field inflation
Tianyu Jia, Yu Sang, Xue Zhang
In the single-field model, the preheating process occurs through self-resonance of inflaton field. We study the nonlinear structures generated during preheating in the -attract…