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Reconstructing three-dimensional parameters of galaxy clusters via multifrequency SZ observations
Andrea Morandi, Daisuke Nagai, Wei Cui
The Sunyaev-Zeldovich (SZ) effect is a promising tool to study physical properties of the hot X-ray emitting intracluster medium (ICM) in galaxy clusters. To date, most SZ observat…
Bias from gas inhomogeneities in the pressure profiles as measured from X-ray and SZ observations
S. Khedekar, E. Churazov, A. Kravtsov +4
X-ray observations of galaxy clusters provide emission measure weighted spectra, arising from a range of density and temperature fluctuations in the intra-cluster medium (ICM). Thi…
Sunyaev-Zeldovich signal processing and temperature-velocity moment method for individual clusters
Jens Chluba, Eric R. Switzer, Daisuke Nagai +1
Future high resolution, high sensitivity Sunyaev-Zeldovich (SZ) observations of individual clusters will provide an exciting opportunity to answer specific questions about the dyna…
A fast and accurate method for computing the Sunyaev-Zeldovich signal of hot galaxy clusters
Jens Chluba, Daisuke Nagai, Sergey Sazonov +1
New generation ground and space-based CMB experiments have ushered in discoveries of massive galaxy clusters via the Sunyaev-Zeldovich (SZ) effect, providing a new window for study…
Bispectrum of the Sunyaev-Zel'dovich Effect
Suman Bhattacharya, Daisuke Nagai, Laurie Shaw +2
We perform a detailed study of the bispectrum of the Sunyaev-Zel'dovich effect. Using an analytical model for the pressure profiles of the intracluster medium, we demonstrate the S…
The Halo Occupation Distribution of SDSS Quasars
Jonathan Richardson, Zheng Zheng, Suchetana Chatterjee +2
We present an estimate of the projected two-point correlation function (2PCF) of quasars in the Sloan Digital Sky Survey (SDSS) over the full range of one- and two-halo scales, 0.0…
Constraining Cluster Physics with the Shape of X-ray Clusters: Comparison of Local X-ray Clusters versus LCDM Clusters
Erwin T. Lau, Daisuke Nagai, Andrey V. Kravtsov +2
Simulations of cluster formation have demonstrated that condensation of baryons into central galaxies during cluster formation can drive the shape of the gas distribution in galaxy…
Fermi-LAT constraints on dark matter annihilation cross section from observations of the Fornax cluster
Shin'ichiro Ando, Daisuke Nagai
We analyze 2.8-yr data of 1-100 GeV photons for clusters of galaxies, collected with the Large Area Telescope onboard the Fermi satellite. By analyzing 49 nearby massive clusters l…