3 papers
astro-ph.HE2026
3D Radiative Transfer of Lyman-series Lines with SKIRT
N. Sameshima, A. Lauwers, B. Vander Meulen +4
Context. High-resolution X-ray spectroscopy and polarimetry provided by XRISM and IXPE offer new diagnostics of the geometry and kinematics of photo-ionised plasmas around compact…
astro-ph.HE2026
X-ray Doppler tomography of Fe K emission in a low-mass X-ray binary 4U 1822-371 - a localized reflector at the accretion stream-disk overflow
N. Sameshima, M. Tsujimoto, M. Uemura
We present the X-ray Doppler tomography of the Fe K (6.4 keV) fluorescence line of the low-mass X-ray binary 4U 1822-371 obtained with XRISM. Eleven orbits of this short period…
astro-ph.SR2026
JWST-DECO: Temporal Variations in the Mid-IR Silicate Features of Two T Tauri Discs Based on Spitzer and JWST observations
N. Sameshima, T. Miyata, T. Kamizuka +9
Mid-infrared spectra of planet-forming discs commonly show prominent silicate emission, whose spectral shape is sensitive to the disc temperature distribution as well as its minera…