Search Results for author: Donghui Jeong

Found 4 papers, 2 papers with code

Revealing the Local Cosmic Web from Galaxies by Deep Learning

no code implementations4 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

Information content in the redshift-space galaxy power spectrum and bispectrum

no code implementations8 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

Efficient parallel algorithm for estimating higher-order polyspectra

1 code implementation24 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

2-FAST: Fast and accurate computation of projected two-point functions

3 code implementations7 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

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