6 papers
Cavendish experiment with fast radio bursts on cosmological scales
Shuren Zhou, Pengjie Zhang
A key measure of gravity is the relation between the Weyl potential and the matter overdensity , encapsulated as an effective gravitational constant f…
AKRA 2.0: Accurate Kappa Reconstruction Algorithm for masked shear catalog
Yuan Shi, Pengjie Zhang, Furen Deng +4
Cosmic shear surveys serve as a powerful tool for mapping the underlying matter density field, including non-visible dark matter. A key challenge in cosmic shear surveys is the acc…
Proposal to construct the dark-matter-only counterpart of the observed universe combining weak lensing and baryon censuses
Shuren Zhou, Pengjie Zhang
Baryonic effects such as AGN feedback can significantly impact the matter clustering, are harder to model from first principles, and emerge as a severe limiting factor in weak lens…
CSST Cosmological Emulator III: Hybrid Lagrangian Bias Expansion Emulation of Galaxy Clustering
Shuren Zhou, Zhao Chen, Yu Yu
Galaxy clustering is an important probe in the upcoming China Space Station Telescope (CSST) survey to understand the structure growth and reveal the nature of the dark sector. How…
Parameterization of Stochasticity in Galaxy Clustering and Reconstruction of Tomographic Matter Clustering
Shuren Zhou, Pengjie Zhang
The stochasticity in galaxy clustering, the mismatch between galaxy and underlying matter distribution, suppresses the matter clustering amplitude reconstructed by the combination…
Challenges in Cosmic Magnification Reconstruction by Magnification Response
Shuren Zhou, Pengjie Zhang
Cosmic magnification on the observed galaxy overdensity is a promising weak gravitational lensing tracer. Current cosmic magnification reconstruction algorithms, ABS (Analytical me…