no code implementations • 4 Aug 2020 • Sungwook E. Hong, Donghui Jeong, Ho Seong Hwang, Juhan Kim
Finally, using the local galaxy sample from Cosmicflows-3, we find the dark-matter map in the local Universe.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
no code implementations • 8 Jul 2020 • Nishant Agarwal, Vincent Desjacques, Donghui Jeong, Fabian Schmidt
We present a Fisher information study of the statistical impact of galaxy bias and selection effects on the estimation of key cosmological parameters from galaxy redshift surveys; in particular, the angular diameter distance, Hubble parameter, and linear growth rate at a given redshift, the cold dark matter density, and the tilt and running of the primordial power spectrum.
Selection bias Cosmology and Nongalactic Astrophysics
1 code implementation • 24 Apr 2019 • Joseph Tomlinson, Donghui Jeong, Juhan Kim
Nonlinearities in the gravitational evolution, galaxy bias, and redshift-space distortion drive the observed galaxy density fields away from the initial near-Gaussian states.
Cosmology and Nongalactic Astrophysics
3 code implementations • 7 Sep 2017 • Henry S. Grasshorn Gebhardt, Donghui Jeong
We present the 2-point function from Fast and Accurate Spherical Bessel Transformation (2-FAST) algorithm for a fast and accurate computation of integrals involving one or two spherical Bessel functions.
Cosmology and Nongalactic Astrophysics