27 citations · 66 across the 8 of their papers we have counts for
8 papers
Detection of highly correlated optical and X-ray variations in SS Cygni with Tomo-e Gozen and NICER
Y. Nishino, M. Kimura, S. Sako +8
We report on simultaneous optical and X-ray observations of the dwarf nova SS Cyg with Tomo-e Gozen/1.05 m Kiso Schmidt and Neutron star Interior Composition ExploreR (it NICER) /…
On the nature of the anomalous event in 2021 in the dwarf nova SS Cygni and its multi-wavelength transition
Mariko Kimura, Shinya Yamada, Nozomi Nakaniwa +20
SS Cyg has long been recognized as the prototype of a group of dwarf novae that show only outbursts. However, this object has entered a quite anomalous event in 2021, which at firs…
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…
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…
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…
Inflight Calibration of the Hitomi Soft X-ray Spectrometer (2) Point Spread Function
Yoshitomo Maeda, Toshiki Sato, Takayuki Hayashi +14
We present results of inflight calibration of the point spread function (PSF) of the Soft X-ray Telescope (SXT-S) that focuses X-ray onto the pixel array of the Soft X-ray Spectrom…
Glimpse of the highly obscured HMXB IGR J16318-4848 with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We report a Hitomi observation of IGR J16318-4848, a high-mass X-ray binary system with an extremely strong absorption of N_H~10^{24} cm^{-2}. Previous X-ray studies revealed that…
In-orbit performance of the soft X-ray imaging system aboard Hitomi (ASTRO-H)
H. Nakajima, Y. Maeda, H. Uchida +46
We describe the in-orbit performance of the soft X-ray imaging system consisting of the Soft X-ray Telescope and the Soft X-ray Imager aboard Hitomi. Verification and calibration o…