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81 papers · 1 filter
Spectroscopy along Multiple, Lensed Sightlines through Outflowing Winds in the Quasar SDSS J1029+2623
Toru Misawa, Naohisa Inada, Ken Ohsuga +3
We study the origin of absorption features on the blue side of the C IV broad emission line of the large-separation lensed quasar SDSS J1029+2623 at z_em ~ 2.197. The quasar images…
X-ray radiographic technique for measuring density uniformity of silica aerogel
Makoto Tabata, Yoshikiyo Hatakeyama, Ichiro Adachi +2
This paper proposes a new X-ray radiographic technique for measuring density uniformity of silica aerogels used as radiator in proximity-focusing ring-imaging Cherenkov detectors.…
An X-ray study of the galactic-scale starburst-driven outflow in NGC 253
Ikuyuki Mitsuishi, Noriko Y. Yamasaki, Yoh Takei
X-ray properties of hot interstellar gas in a starburst galaxy NGC 253 were investigated to gain a further understanding of starburst-driven outflow activity by XMM-Newton and Suza…
Temporal and Spatial Analyses of Spectral Indices of Nonthermal Emissions Derived from Hard X-Rays and Microwaves
Ayumi Asai, Junko Kiyohara, Hiroyuki Takasaki +5
We studied electron spectral indices of nonthermal emissions seen in hard X-rays (HXRs) and in microwaves. We analyzed 12 flares observed by the Hard X-ray Telescope aboard {\it Yo…
Two Power-Law States of the Ultraluminous X-ray Source IC342 X-1
Tessei Yoshida, Naoki Isobe, Shin Mineshige +3
In order to elucidate the emission properties of ultraluminous X-ray sources (ULXs) during their power-law (PL) state, we examined long-term X-ray spectral data of IC342 X-1 during…
Saturation of Stellar Winds from Young Suns
Takeru K. Suzuki, Shinsuke Imada, Ryuho Kataoka +4
We investigate mass losses via stellar winds from sun-like main sequence stars with a wide range of activity levels. We perform forward-type magnetohydrodynamical numerical experim…