Toshiki Sato
A5086799270- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Interactive and Immersive Displays
- Astrophysics and Cosmic Phenomena
- Augmented Reality Applications
- Tactile and Sensory Interactions
- Advanced X-ray Imaging Techniques
- Metal and Thin Film Mechanics
- X-ray Spectroscopy and Fluorescence Analysis
- Particle Detector Development and Performance
- Pulsars and Gravitational Waves Research
- Hand Gesture Recognition Systems
- GaN-based semiconductor devices and materials
- Video Analysis and Summarization
- Solar and Space Plasma Dynamics
- Calibration and Measurement Techniques
- Advanced Optical Imaging Technologies
- Diamond and Carbon-based Materials Research
- Hydrogen embrittlement and corrosion behaviors in metals
- Semiconductor materials and devices
- Astrophysics and Star Formation Studies
- Virtual Reality Applications and Impacts
- LGBTQ Health, Identity, and Policy
- Adhesion, Friction, and Surface Interactions
- Statistical and numerical algorithms
Meiji University
2023-2025
Japan Aerospace Exploration Agency
2012-2024
Institute of Space and Astronautical Science
2012-2024
Tokyo Metropolitan University
2010-2024
Goddard Space Flight Center
2019-2024
European Space Research and Technology Centre
2024
Kobe Steel (Japan)
1999-2023
Japan Advanced Institute of Science and Technology
2021-2023
Rikkyo University
2021-2023
University of New Hampshire
2023
Aims: Psychiatric comorbidity and mental instability seem to be important unfavorable prognostic factors for long‐term psychosocial adjustment in gender identity disorder (GID). However, psychiatric patients with GID has rarely been assessed. In this study, we investigated the life events of Japan. Methods: A total 603 consecutive were evaluated independently by at least two senior psychiatrists clinic using clinical information results examinations. Results: Using DSM‐IV criteria, 579...
Abstract We present an analysis of the first two XRISM/Resolve spectra well-known Seyfert-1.5 active galactic nucleus (AGN) in NGC 4151, obtained 2023 December. Our work focuses on nature narrow Fe K α emission line at 6.4 keV, strongest and most common X-ray observed AGN. The total is found to consist three components. Even narrowest component resolved with evident ,1 (6.404 keV) ,2 (6.391 contributions a 2:1 flux ratio, fully consistent neutral gas negligible bulk velocity. Subject...
Abstract We present an initial analysis of the X-Ray Imaging and Spectroscopy Mission (XRISM) first-light observation supernova remnant (SNR) N 132D in Large Magellanic Cloud. The Resolve microcalorimeter has obtained first high-resolution spectrum 1.6–10 keV band, which contains K-shell emission lines Si, S, Ar, Ca, Fe. find that Si S are relatively narrow, with a broadening represented by Gaussian-like velocity dispersion $\sigma _v \sim 450$ km s$^{-1}$. However, Fe He$\alpha$...
The new Japanese x-ray astronomy satellite, ASTRO-H, will carry two identical hard telescopes (HXTs), which cover the energy range of 5 to 80 keV. HXT mirrors employ tightly nested, conically approximated thin-foil Wolter-I optics, and mirror surfaces are coated with Pt/C depth-graded multilayers enhance effective area by means Bragg reflection. comprises foils 120-450 mm in diameter 200 length, a focal length 12 m. To obtain large area, 213 aluminum 0.2 thickness nested confocally....
We present new evidence that the bright non-thermal X-ray emission features in interior of Cassiopeia A supernova remnant (SNR) are caused by inward moving shocks based on Chandra and NuSTAR observations. Several inward-moving filaments were identified using monitoring data taken 2000-2014. These shock locations nearly coincident with hard (15-40 keV) hot spots seen NuSTAR. From proper motion measurements, transverse velocities estimated to be range $\sim$2,100-3,800 km s$^{-1}$ for a...
ASTRO-H is an astrophysics satellite dedicated for non-dispersive X-ray spectroscopic study on selective celestial sources. Among the onboard instruments there are four Wolter-I mirrors of their reflectors' figure in conical approximation. Two soft mirrors<sup>1</sup>, which energy range from a few hundred eV to 15 keV within effective aperture being defined by nested radius ranging between 5.8 cm 22.5 cm. The focal point will be calorimeter (SXS) and CCD camera (SXI), respectively. were...
ASTRO-H (Hitomi) is a Japanese X-ray astrophysics satellite just launched in February, 2016, from Tanegashima, Japan by JAXA's H-IIA launch vehicle. It has two Soft Telescopes (SXTs), among other instruments, that were developed NASA's Goddard Space Flight Center collaboration with ISAS/JAXA and Nagoya University. One for an micro-calorimeter instrument (Soft Spectrometer, SXS) the CCD camera Imager, SXI), both covering energy band up to 15 keV. The SXTs fully characterized at 30-m beamline...
Abstract We present XRISM Resolve observations of the core hot, relaxed galaxy cluster Abell 2029 (A2029). find that line-of-sight bulk velocity intracluster medium (ICM) within central 180 kpc is at rest with respect to brightest galaxy, a 3 σ upper limit ∣ v < 100 km s −1 . robustly measure field-integrated ICM dispersion be = 169 ± 10 , obtaining similar results for both single-temperature and two-temperature plasma models account cool core. This result, if ascribed isotropic...
PhotoelasticTouch is a novel tabletop system designed to intuitively facilitate touch-based interaction via real objects made from transparent elastic material. The utilizes vision-based recognition techniques and the photoelastic properties of rubber recognize deformed regions Our works with materials over wide variety shapes does not require any explicit visual markers. Compared traditional interactive surfaces, our 2.5 dimensional interface enables direct touch soft tactile feedback. In...
Abstract The X-ray binary system Cygnus X-3 (4U 2030+40, V1521 Cyg) is luminous but enigmatic owing to the high intervening absorption. High-resolution spectroscopy uniquely probes dynamics of photoionized gas in system. In this Letter, we report on an observation Cyg with XRISM/Resolve spectrometer, which provides unprecedented spectral resolution and sensitivity 2–10 keV band. We detect multiple kinematic ionization components absorption emission whose superposition leads complex line...
The resolve instrument onboard the X-Ray Imaging and Spectroscopy Mission (XRISM) consists of an array 6 × silicon-thermistor microcalorimeters cooled down to 50 mK a high-throughput x-ray mirror assembly (XMA) with focal length 5.6 m. XRISM is recovery mission ASTRO-H/Hitomi, Resolve rebuild ASTRO-H soft spectrometer (SXS) Soft X-ray Telescope (SXT) that achieved energy resolution ∼5 eV FWHM on orbit, several important changes based lessons learned from ASTRO-H. flight models Dewar...
Abstract Richardson–Lucy (RL) deconvolution is one of the classical methods widely used in X-ray astronomy and other areas. Amid recent progress image processing, RL still leaves much room for improvement under realistic situations. One direction to include positional dependence a point-spread function (PSF), so-called with spatially variant PSF (RL sv ). Another method estimating reliable number iterations their associated uncertainties. We developed practical that incorporates algorithm...
We describe the in-orbit performance of soft X-ray imaging system consisting Soft Telescope and Imager aboard Hitomi. Verification calibration spectroscopic are carried out making best use limited data less than three weeks. Basic including a large field view 38'x38' is verified with first light image Perseus cluster galaxies. Amongst small number observed targets, on-minus-off pulse for out-of-time events Crab pulsar enables us to measure half power diameter telescope as about 1.3'. The...
We explore a new scenario for producing stripped-envelope supernova progenitors. In our scenario, the is second of binary, in which envelope secondary was removed during its red supergiant phase by impact first supernova. Through 2D hydrodynamical simulations, we find that $\sim$50-90$\%$ can be unbound as long pre-supernova orbital separation $\lesssim5$ times stellar radius. Recombination energy plays significant role unbinding, especially relatively high mass systems ($\gtrsim18M_\odot$)....
The supernova remnant (SNR) 3C 397 is thought to originate from a Type Ia (SN Ia) explosion of near-Chandrasekhar-mass ($M_{\rm Ch}$) progenitor, based on the enhanced abundances Mn and Ni revealed by previous X-ray study with Suzaku. Here we report follow-up XMM-Newton observations this SNR, conducted aim investigating detailed spatial distribution Fe-peak elements. We have discovered an ejecta clump extremely high Ti Cr, in addition Mn, Fe, Ni, southern part SNR. Fe mass estimated be...
Interference free distribution and speciation analysis of uranium are achieved by using a transition-edge sensor for microbeam X-ray measurements in the hard region.