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Understanding the General Feature of Microvariability in Blazar W2R 192642
Mahito Sasada, Shin Mineshige, Shinya Yamada +1
We analyze the monitoring light curve of a blazar W2R 192642 to examine features of microvariability by means of the "shot analysis" technique. We select 195 intr…
A radiation-hydrodynamic model of accretion columns for ultra-luminous X-ray pulsars
Tomohisa Kawashima, Shin Mineshige, Ken Ohsuga +1
Prompted by the recent discovery of pulsed emission from an ultra-luminous X-ray source, M82 X-2 ("ULX-pulsar"), we perform a two-dimensional radiation-hydrodynamic simulation of a…
The Quiescent Intracluster Medium in the Core of the Perseus Cluster
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +213
Clusters of galaxies are the most massive gravitationally-bound objects in the Universe and are still forming. They are thus important probes of cosmological parameters and a host…
Hitomi constraints on the 3.5 keV line in the Perseus galaxy cluster
Hitomi Collaboration, Felix A. Aharonian, Hiroki Akamatsu +215
High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified E=3.5 keV emission line reported in several low-resolution studies of va…