220 citations · 796 across the 27 of their papers we have counts for
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Cosmic Himalayas in CROCODILE : Probing the Extreme Quasar Overdensities by Count-in-Cells analysis and Nearest Neighbor Distribution
Yuto Kuwayama, Yongming Liang, Kentaro Nagamine +7
The recently reported Cosmic Himalayas (CH) -- an extreme quasar overdensity at z~2 -- poses an apparent challenge to the Lambda CDM framework, with a reported significance of 16.9…
Analytic Model for Scattered Ly Emission in the Post-reionization Intergalactic Medium
Hyunbae Park, Hyunmi Song, Chris Byrohl +3
Ly intensity mapping is emerging as a new probe of faint galaxies consisting the cosmic web that elude traditional surveys. However, the resonant nature of Ly radiative trans…
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…
Cosmic Variance and the Inhomogeneous UV Luminosity Function of Galaxies During Reionization
Taha Dawoodbhoy, Paul R. Shapiro, Pierre Ocvirk +8
When the first galaxies formed and starlight escaped into the intergalactic medium to reionize it, galaxy formation and reionization were both highly inhomogeneous in time and spac…
Scattering of Lyα Photons through the Reionizing Intergalactic Medium: I. Spectral Energy Distribution
Hyunbae Park, Hyo Jeong Kim, Kyungjin Ahn +7
During reionization, a fraction of galactic Ly emission is scattered in the intergalactic medium (IGM) and appears as a diffuse light extending megaparsecs from the source. We i…
The short ionizing photon mean free path at z=6 in Cosmic Dawn III, a new fully-coupled radiation-hydrodynamical simulation of the Epoch of Reionization
Joseph S. W. Lewis, Pierre Ocvirk, Jenny G. Sorce +13
Recent determinations of the mean free path of ionising photons (mfp) in the intergalactic medium (IGM) at are lower than many theoretical predictions. To gain insight in…
The impact of inhomogeneous subgrid clumping on cosmic reionization II: modelling stochasticity
Michele Bianco, Ilian T. Iliev, Kyungjin Ahn +4
Small-scale density fluctuations can significantly affect reionization but are typically modelled quite crudely. Unresolved fluctuations in numerical simulations and analytical cal…
Cosmological Information from the Small-scale Redshift Space Distortions
Motonari Tonegawa, Changbom Park, Yi Zheng +4
The redshift-space distortion (RSD) in the observed distribution of galaxies is known as a powerful probe of cosmology. Observations of large-scale RSD have given tight constraints…
Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Possibility of estimateing the non-linear systematics using fast simulations
Qinglin Ma, Yiqing Guo, Xiao-Dong Li +5
The tomographic AP method is so far the best method in separating the Alcock-Paczynski (AP) signal from the redshift space distortion (RSD) effects and deriving powerful constraint…
The impact of inhomogeneous subgrid clumping on cosmic reionization
Yi Mao, Jun Koda, Paul R. Shapiro +5
Cosmic reionization was driven by the imbalance between early sources and sinks of ionizing radiation, both of which were dominated by small-scale structure and are thus usually tr…
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…
Non-parametric dark energy reconstruction using the tomographic Alcock-Paczynski test
Zhenyu Zhang, Gan Gu, Xiaoma Wang +7
The tomographic Alcock-Paczynski (AP) method can result in tight cosmological constraints by using small and intermediate clustering scales of the large scale structure (LSS) of th…
Suppression of Star Formation in Low-Mass Galaxies Caused by the Reionization of their Local Neighborhood
Taha Dawoodbhoy, Paul R. Shapiro, Pierre Ocvirk +10
Photoheating associated with reionization suppressed star formation in low-mass galaxies. Reionization was inhomogeneous, however, affecting different regions at different times. T…
Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: Dynamical dark energy
Xiao-Dong Li, Cristiano G. Sabiu, Changbom Park +6
We perform an anisotropic clustering analysis of 1,133,326 galaxies from the Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR) 12…
Cosmological constraints from the redshift dependence of the volume effect using the galaxy 2-point correlation function across the line-of-sight
Xiao-Dong Li, Changbom Park, Cristiano G. Sabiu +4
We develop a methodology to use the redshift dependence of the galaxy 2-point correlation function (2pCF) across the line-of-sight, , as a probe of cosmological parame…
Cosmological constraints from the redshift dependence of the Alcock-Paczynski effect: application to the SDSS-III BOSS DR12 galaxies
Xiao-Dong Li, Changbom Park, Cristiano G. Sabiu +5
We apply the methodology developed in \cite{Li2014,Li2015} to BOSS DR12 galaxies and derive cosmological constraints from the redshift dependence of the Alcock-Paczynski (AP) effec…
The Impact of Nonlinear Structure Formation on the Power Spectrum of Transverse Momentum Fluctuations and the Kinetic Sunyaev-Zel'dovich Effect
Hyunbae Park, Eiichiro Komatsu, Paul R. Shapiro +2
Cosmological transverse momentum fields, whose directions are perpendicular to Fourier wave vectors, induce temperature anisotropies in the cosmic microwave background via the kine…
The Kinetic Sunyaev-Zel'dovich effect as a probe of the physics of cosmic reionization: the effect of self-regulated reionization
Hyunbae Park, Paul R. Shapiro, Eiichiro Komatsu +3
We calculate the angular power spectrum of the Cosmic Microwave Background (CMB) temperature fluctuations induced by the kinetic Sunyaev-Zel'dovich (kSZ) effect from the epoch of r…
Simulating Cosmic Reionization and the Radiation Backgrounds from the Epoch of Reionization
Paul R. Shapiro, Ilian T. Iliev, Garrelt Mellema +10
Large-scale reionization simulations are described which combine the results of cosmological N-body simulations that model the evolving density and velocity fields and identify the…
Gravitational Potential Environment of Galaxies: I. Simulation
Hyunbae Park, Juhan Kim, Changbom Park
We extend the concept of galaxy environment from the local galaxy number density to the gravitational potential and its functions like the shear tensor. For this purpose we examine…