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Spatial Distribution of Intracluster Light versus Dark Matter in Horizon Run 5
Jaewon Yoo, Changbom Park, Cristiano G. Sabiu +11
One intriguing approach for studying the dynamical evolution of galaxy clusters is to compare the spatial distributions among various components, such as dark matter, member galaxi…
Probing cosmology via the clustering of critical points
Junsup Shim, Christophe Pichon, Dmitri Pogosyan +5
Exclusion zones in the cross-correlations between critical points (peak-void, peak-wall, filament-wall, filament-void) of the density field define quasi-standard rulers that can be…
The effects of non-linearity on the growth rate constraint from velocity correlation functions
Motonari Tonegawa, Stephen Appleby, Changbom Park +2
The two-point statistics of the cosmic velocity field, measured from galaxy peculiar velocity (PV) surveys, can be used as a dynamical probe to constrain the growth rate of large-s…
Cluster-counterpart Voids: Void Identification from Galaxy Density Field
Junsup Shim, Changbom Park, Juhan Kim +1
We identify cosmic voids from galaxy density fields under the theory of void-cluster correspondence. We extend the previous novel void-identification method developed for the matte…
Cosmological Parameter Constraints from the SDSS Density and Momentum Power Spectra
Stephen Appleby, Motonari Tonegawa, Changbom Park +3
We extract the galaxy density and momentum power spectra from a subset of early-type galaxies in the SDSS DR7 main galaxy catalog. Using galaxy distance information inferred from t…
Tomographic Alcock-Paczynski Test with Redshift-Space Correlation Function: Evidence for the Dark Energy Equation of State Parameter w>-1
Fuyu Dong, Changbom Park, Sungwook E. Hong +4
The apparent shape of galaxy clustering depends on the adopted cosmology used to convert observed redshift to comoving distance, the relation, as it changes the line element…