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Suzaku Observation of the Ophiuchus Galaxy Cluster: One of the Hottest Cool Core Clusters
Yutaka Fujita, Kiyoshi Hayashida, Masaaki Nagai +6
We present the analysis of a Suzaku observation of the Ophiuchus galaxy cluster. We confirmed that the cluster has a cool core. While the temperature of the intracluster medium (IC…
LoCuSS: Comparison of Observed X-ray and Lensing Galaxy Cluster Scaling Relations with Simulations
Y. -Y. Zhang, A. Finoguenov, H. Boehringer +5
The Local Cluster Substructure Survey (LoCuSS, Smith et al.) is a systematic multi-wavelength survey of >100 X-ray luminous galaxy clusters (0.14<z<0.3) selected from the ROSAT all…
High Metallicity of the X-Ray Gas up to the Virial Radius of a Binary Cluster of Galaxies: Evidence of Galactic Superwinds at High-Redshift
Yutaka Fujita, Noriaki Tawa, Kiyoshi Hayashida +4
We present an analysis of a Suzaku observation of the link region between the galaxy clusters A399 and A401. We obtained the metallicity of the intracluster medium (ICM) up to the…
Observational Constraints on the ICM Temperature Enhancement by Cluster Mergers
Nobuhiro Okabe, Keiichi Umetsu
We present results from a combined weak lensing and X-ray analysis of the merging cluster A1914 at a redshift of based on -band imaging data with Subaru/Suprime…
Subaru Weak Lensing Study of Seven Merging Clusters: Distributions of Mass and Baryons
Nobuhiro Okabe, Keiichi Umetsu
We present and compare projected distributions of mass, galaxies, and the intracluster medium (ICM) for a sample of merging clusters of galaxies based on the joint weak-lensing, op…
Magnetic field generation by the Weibel instability at temperature gradients in collisionless plasmas
Yutaka Fujita, Tsunehiko N. Kato, Nobuhiro Okabe
The Weibel instability could be responsible for the generation of magnetic fields in various objects such as gamma-ray bursts, jets from active galactic nuclei, and clusters of gal…