3 papers
astro-ph.IM2021
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…
astro-ph.IM2019
A concept for the X-ray telescope system with an angular-resolution booster
Yoshitomo Maeda, Ryo Iizuka, Takayuki Hayashi +7
We present a concept of the X-ray imaging system with high angular-resolution and moderate sensitivity. In this concept, a two-dimensional detector, i.e., imager, is put at a sligh…
astro-ph.HE2019
Variation of mass accretion rate onto the white dwarf in the dwarf nova VW Hyi in quiescence
Nozomi Nakaniwa, Takayuki Hayashi, Mai Takeo +1
We have analysed a series of Suzaku data and one dataset of XMM-Newton of the SU UMa type dwarf nova VW Hyi in optical quiescence. The observed spectra in the 0.2-10 keV band are m…