130 citations · 1.9k across the 69 of their papers we have counts for
5 papers · 1 filter
Living with Neighbors. II. Statistical Analysis of Flybys and Mergers of Dark Matter Halos in Cosmological Simulations
Sung-Ho An, Juhan Kim, Jun-Sung Moon +1
We present a statistical analysis of flybys of dark matter halos compared to mergers using cosmological -body simulations. We mainly focus on gravitationally interacting target…
Efficient parallel algorithm for estimating higher-order polyspectra
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. Explo…
Alcock-Paczynski Test with the Evolution of Redshift-Space Galaxy Clustering Anisotropy
Hyunbae Park, Changbom Park, Cristiano G. Sabiu +5
We develop an improved Alcock-Paczynski (AP) test method that uses the redshift-space two-point correlation function (2pCF) of galaxies. Cosmological constraints can be obtained by…
Constraining Cosmology with Big Data Statistics of Cosmological Graphs
Sungryong Hong, Donghui Jeong, Ho Seong Hwang +7
By utilizing large-scale graph analytic tools implemented in the modern Big Data platform, Apache Spark, we investigate the topological structure of gravitational clustering in fiv…
Graph Database Solution for Higher Order Spatial Statistics in the Era of Big Data
Cristiano G. Sabiu, Ben Hoyle, Juhan Kim +1
We present an algorithm for the fast computation of the general -point spatial correlation functions of any discrete point set embedded within an Euclidean space of $\mathbb{R}^…