Browsing Articles by Author "Akimoto, F."

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Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster

Akamatsu, H.; Akimoto, F.; Allen, S.W.; Chaio, M.P.; Coppi, P.; Constantini, E.; Herder, J.W.; Enoto, T.; Gallo, Luigi C.; Wilkins, D.R. (The American Astronomical Society, 2017-03-03)

High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified emission line reported in several low-resolution studies of various massive systems, such as galaxies and clusters, ...
Solar abundance ratios of the iron-peak elements in the Perseus cluster

Hitomi Collaboration; Aharonian, F.; Akamatsu, H.; Akimoto, F.; Allen, S. W.; Angelini, L.; Audard, M.; Awaki, H.; Axelsson, M.; Bamba, A.; Bautz, M. W.; Gallo, Luigi C. (Springer Nature, 2017-11--2)

The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae¹. Therefore, X-ray spectroscopy of the intracluster medium ...

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