6 citations · 11 across the 6 of their papers we have counts for
6 papers
Indication of the Less-ionized Clumpy Ultra-Fast Outflows in Seyfert Galaxies
Takuya Midooka, Misaki Mizumoto, Ken Ebisawa
We present a systematic investigation of X-ray spectral variability of Seyfert 1 galaxies using a ``spectral-ratio model fitting'' technique, which we developed to estimate contrib…
Radiatively-driven clumpy X-ray absorbers in the NLS1 galaxy IRAS 13224-3809
Takuya Midooka, Misaki Mizumoto, Ken Ebisawa
Recent radiation-magnetohydrodynamic simulations of active galactic nuclei predict the presence of the disk winds, which may get unstable and turn into fragmented clumps far from t…
A novel "spectral-ratio model fitting" to resolve complicated AGN X-ray spectral variations
Takuya Midooka, Misaki Mizumoto, Ken Ebisawa
Contemporary radiation-magnetohydrodynamic simulation of the AGNs predicts presence of the hot and strong accretion disk wind, which gets unstable far from the central region and t…
Simple interpretation of the seemingly complicated X-ray spectral variation of NGC 5548
Takuya Midooka, Ken Ebisawa, Misaki Mizumoto +1
NGC 5548 is a very well-studied Seyfert 1 galaxy in broad wavelengths. Previous multiwavelength observation campaigns have indicated that its multiple absorbers are highly variable…
X-ray transmission calibration of the gate valve for the X-ray astronomy satellite XRISM
Takuya Midooka, Masahiro Tsujimoto, Shunji Kitamoto +5
\textit{Resolve} onboard the X-ray satellite XRISM is a cryogenic instrument with an X-ray microcalorimeter in a Dewar. A lid partially transparent to X-rays (called gate valve, or…
Long-term X-ray variation of the colliding wind Wolf-Rayet binary WR 125
Takuya Midooka, Yasuharu Sugawara, Ken Ebisawa
WR 125 is considered as a Colliding Wind Wolf-rayet Binary (CWWB), from which the most recent infrared flux increase was reported between 1990 and 1993. We observed the object four…