Hayato Sugiyama Masaki Ueda Kotaro Fukushima Shogo B. Kobayashi Noriko Y. Yamasaki Kosuke Sato Kyoko Matsushita
Publications of the Astronomical Society of Japan 75(6) 1324-1336 2023年12月
Observations of the hot X-ray emitting interstellar medium in the Milky Way are important for studying the stellar feedback and for understanding the formation and evolution of galaxies. We present measurements of the soft X-ray background emissio...
Kotaro Fukushima Shogo B. Kobayashi Kyoko Matsushita
Astrophysical Journal 953(1) 2023年8月
Chemical elements in the hot medium permeating early-type galaxies, groups, and clusters make such objects an excellent laboratory for studying metal enrichment and cycling processes on the largest scales of the universe. Here, we report the analy...
Masaki Ueda Hayato Sugiyama Shogo B. Kobayashi Kotaro Fukushima Noriko Y. Yamasaki Kosuke Sato Kyoko Matsushita
Publications of the Astronomical Society of Japan 74(6) 1396-1414 2022年12月
We present measurements of the soft X-ray background emission for 130 Suzaku observations at 75◦ < l < 285◦ and |b| > 15◦ obtained from 2005 to 2015, covering nearly one solar cycle. In addition to the standard soft X-ray background model consisti...
Kotaro Fukushima Shogo B. Kobayashi Kyoko Matsushita
Monthly Notices of the Royal Astronomical Society 514(3) 4222-4238 2022年8月
Here, we present results from over 500 ksChandra and XMM-Newton observations of the cool core of the Centaurus cluster. We investigate the spatial distributions of the O, Mg, Si, S, Ar, Ca, Cr, Mn, Fe, and Ni abundances in the intracluster medium ...
Kotaro Fukushima Hiroya Yamaguchi Patrick O. Slane Sangwook Park Satoru Katsuda Hidetoshi Sano Laura A. Lopez Paul P. Plucinsky Shogo B. Kobayashi Kyoko Matsushita
Astrophysical Journal 897(1) 2020年7月
Despite their importance, a detailed understanding of Type Ia supernovae (SNe Ia) remains elusive. X-ray measurements of the element distributions in supernova remnants (SNRs) offer important clues for understanding the explosion and nucleosynthes...
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