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17 papers · 1 filter
An optimal filter for the detection of galaxy clusters through weak lensing
M. Maturi, M. Meneghetti, M. Bartelmann +2
We construct a linear filter optimised for detecting dark-matter halos in weak-lensing data. The filter assumes a mean radial profile of the halo shear pattern and modifies that sh…
Spectroscopic-Like Temperature of Clusters of Galaxies and Cosmological Implications
P. Mazzotta, E. Rasia, S. Borgani +3
The thermal properties of hydrodynamical simulations of galaxy clusters are usually compared to observations by relying on the emission-weighted temperature T_ew, instead of on the…
Simulating the Soft X-ray excess in clusters of galaxies
L. -M. Cheng, S. Borgani, P. Tozzi +7
The detection of excess of soft X-ray or Extreme Ultraviolet (EUV) radiation, above the thermal contribution from the hot intracluster medium (ICM), has been a controversial subjec…
Mismatch between X-ray and emission-weighted temperatures in galaxy clusters: cosmological implications
E. Rasia, P. Mazzotta, S. Borgani +5
The thermal properties of hydrodynamical simulations of galaxy clusters are usually compared to observations by relying on the emission-weighted temperature T_ew, instead of on the…
Locating the Warm-Hot Intergalactic Medium in the Simulated Local Universe
K. Yoshikawa, K. Dolag, Y. Suto +11
We present an analysis of mock spectral observation of warm-hot intergalactic medium (WHIM) using a constrained simulation of the local universe. The simulated map of oxygen emissi…
Constraints on Dark Energy Models from Galaxy Clusters with Multiple Arcs
Massimo Meneghetti, Bhuvnesh Jain, Matthias Bartelmann +1
We make an exploratory study of how well dark energy models can be constrained using lensed arcs at different redshifts behind cluster lenses. Arcs trace the critical curves of clu…