500 citations · 3.7k across the 87 of their papers we have counts for
9 papers · 1 filter
Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters
Nobuhiro Okabe, Masamune Oguri, Hiroki Akamatsu +9
We present multi-wavelength studies of optically-defined merging clusters, based on the Hyper Suprime-Cam Subaru Strategic Program. Luminous red galaxies, tracing cluster mass dist…
The Physics of Galaxy Cluster Outskirts
Stephen Walker, Aurora Simionescu, Daisuke Nagai +6
As the largest virialized structures in the universe, galaxy clusters continue to grow and accrete matter from the cosmic web. Due to the low gas density in the outskirts of cluste…
Detection of polarized gamma-ray emission from the Crab nebula with Hitomi Soft Gamma-ray Detector
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We present the results from the Hitomi Soft Gamma-ray Detector (SGD) observation of the Crab nebula. The main part of SGD is a Compton camera, which in addition to being a spectrom…
Nitrogen abundance in the X-ray halos of clusters and groups of galaxies
Junjie Mao, J. de Plaa, J. S. Kaastra +6
Chemical abundances in the X-ray halos (also known as the intracluster medium, ICM) of clusters and groups of galaxies can be measured via prominent emission line features in their…
SKA-Athena Synergy White Paper
R. Cassano, R. Fender, C. Ferrari +35
The Advanced Telescope for High Energy Astrophysics (Athena) is the X-ray observatory large mission selected by the European Space Agency (ESA), within its Cosmic Vision 2015-2025…
X-ray study of the double radio relic Abell 3376 with Suzaku
I. Urdampilleta, H. Akamatsu, F. Mernier +5
We present an X-ray spectral analysis of the nearby double radio relic merging cluster Abell 3376 ( = 0.046), observed with the XIS instrument. These deep (360 ks…
Magnetic Field Analysis of the Bow and Terminal Shock of the SS433 Jet
Haruka Sakemi, Mami Machida, Takuya Akahori +4
We report a polarization analysis of the eastern region of W50, observed with the Australia Telescope Compact Array (ATCA) at 1.4 - 3.0 GHz. In order to study the physical structur…
Hitomi X-ray Observation of the Pulsar Wind Nebula G21.50.9
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +194
We present results from the Hitomi X-ray observation of a young composite-type supernova remnant (SNR) G21.50.9, whose emission is dominated by the pulsar wind nebula (PWN) cont…
X-ray properties of high-richness CAMIRA clusters in the Hyper Suprime-Cam Subaru Strategic Program field
Naomi Ota, Ikuyuki Mitsuishi, Yasunori Babazaki +13
We present the first results of a pilot X-ray study of 37 rich galaxy clusters at in the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) field. Diffuse X-ray emiss…