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16 papers · 2 filters
Removing the Impact of Correlated PSF Uncertainties in Weak Lensing
Tianhuan Lu, Jun Zhang, Fuyu Dong +5
Accurate reconstruction of the spatial distributions of the Point Spread Function (PSF) is crucial for high precision cosmic shear measurements. Nevertheless, current methods are n…
Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups
Wentao Luo, Xiaohu Yang, Tianhuan Lu +10
As the second paper of a series on studying galaxy-galaxy lensing signals using the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we present our measurement and modelling of…
Measuring patchy reionisation with kSZ-21 cm correlations
Q. Ma, K. Helgason, E. Komatsu +2
We study cross-correlations of the kinetic Sunyaev-Zel'dovich effect (kSZ) and 21 cm signals during the epoch of reionisation (EoR) to measure the effects of patchy reionisation. S…
The build up of the correlation between halo spin and the large scale structure
Peng Wang, Xi Kang
Both simulations and observations have confirmed that the spin of haloes/galaxies is correlated with the large scale structure (LSS) with a mass dependence such that the spin of lo…
Model-independent Constraints on Cosmic Curvature and Opacity
Guo-Jian Wang, Jun-Jie Wei, Zheng-Xiang Li +2
In this paper, we propose to estimate the spatial curvature of the universe and the cosmic opacity in a model-independent way with expansion rate measurements, , and type Ia…
The influence of Host Galaxies in Type Ia Supernova Cosmology
Syed A. Uddin, Jeremy Mould, Chris Lidman +2
We use a sample of 1338 spectroscopically confirmed and photometrically classified Type Ia Supernovae (SNe Ia), sourced from the CSP, CfA, SDSS-II, and SNLS supernova samples, to e…