Tianhuan Lu - Shanghai Jiao Tong University

Tianhuan Lu
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Tianhuan Lu
Shanghai Jiao Tong University

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Cosmology and Nongalactic Astrophysics (2)
Astrophysics of Galaxies (1)

Publications Authored By Tianhuan Lu

Halo bias is the one of the key ingredients of the halo models. It was shown at a given redshift to be only dependent, to the first order, on the halo mass. In this study, four types of cosmic web environments: clusters, filaments, sheets and voids are defined within a state of the art high resolution $N$-body simulation. Read More

Affiliations: 1Shanghai Jiao Tong University, 2Shanghai Jiao Tong University, 3Shanghai Jiao Tong University, 4Shanghai Jiao Tong University, 5Peking University, 6Shanghai Normal University, 7Purple Mountain Observatory, 8Peking University

Reconstruction of the point spread function (PSF) is a critical process in weak lensing measurement. We develop a real-data based and galaxy-oriented pipeline to compare the performances of various PSF reconstruction schemes. Making use of a large amount of the CFHTLenS data, the performances of three classes of interpolating schemes - polynomial, Kriging, and Shepard - are evaluated. Read More