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Seeing in the dark -- II. Cosmic shear in the Sloan Digital Sky Survey
Eric M. Huff, Tim Eifler, Christopher M. Hirata +3
Statistical weak lensing by large-scale structure -- cosmic shear -- is a promising cosmological tool, which has motivated the design of several large upcoming surveys. Here, we pr…
Seeing in the dark -- I. Multi-epoch alchemy
Eric M. Huff, Christopher M. Hirata, Rachel Mandelbaum +3
Weak lensing by large-scale structure is an invaluable cosmological tool given that most of the energy density of the concordance cosmology is invisible. Several large ground-based…
Impact of the Relative Motion between the Dark Matter and Baryons on the First Stars
Anastasia Fialkov, Rennan Barkana, Dmitriy Tseliakhovich +1
Recently the initial supersonic relative velocity between the dark matter and baryons was shown to have an important effect on galaxy formation at high redshift. We study the impac…
Large-scale clustering of galaxies in general relativity
Donghui Jeong, Fabian Schmidt, Christopher M. Hirata
Several recent studies have shown how to properly calculate the observed clustering of galaxies in a relativistic context, and uncovered corrections to the Newtonian calculation th…
Precision simulation of ground-based lensing data using observations from space
Rachel Mandelbaum, Christopher M. Hirata, Alexie Leauthaud +2
Current and upcoming wide-field, ground-based, broad-band imaging surveys promise to address a wide range of outstanding problems in galaxy formation and cosmology. Several such us…
Optimal Linear Image Combination
Barnaby Rowe, Christopher Hirata, Jason Rhodes
A simple, yet general, formalism for the optimized linear combination of astrophysical images is constructed and demonstrated. The formalism allows the user to combine multiple und…