Masahiro Tsujimoto

Associate professor

Japan Aerospace Exploration Agency

Japan

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About

Masahiro Tsujimoto is an Associate Professor at the Japan Aerospace Exploration Agency. His research areas include high-energy astrophysics and photoionized plasma diagnostics, with a focus on X-ray spectroscopy using technologies such as XRISM and Cloudy. Recent publications highlight his work on the Fe xxv line ratio in photoionized plasma and the spectral modeling of stellar phenomena.

Articles (24)

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2025

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2021

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2021

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2020

Collaborators (18)

Tommaso Ghigna

Assistant Professor

High Energy Accelerator Research Organization

JAPAN

Masahiro Tsujimoto

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Articles (24)

Benchmark of the Fe xxv 𝓡 ratio in photoionized plasma during eclipse of Centaurus X-3 with XRISM/Resolve

Outflowing photoionized plasma in Circinus X-1 using the high-resolution X-ray spectrometer Resolve onboard XRISM and the radiative transfer code cloudy

Spectroscopic diagnostics of high-temperature plasma in stellar coronae using Fe xxiv–xxiv K-shell lines with XRISM

New insights with XRISM and Cloudy: A novel column density diagnostic

High-velocity Blue-shifted Fe xxv Heα Line during a Superflare of the RS Canum Venaticorum–type Star IM Peg

Investigation of Nonequilibrium Ionization Plasma during a Giant Flare of UX Arietis Triggered with MAXI and Observed with NICER

Intrinsic line profiles for X-ray fluorescent lines in SKIRT

Spectral Modeling of the Supersoft X-Ray Source CAL87 Based on Radiative Transfer Codes

Detection of the Orbital Modulation of Fe Kα Fluorescence Emission in Centaurus X-3 Using the High-resolution Spectrometer Resolve on board XRISM

JASMINE: Near-infrared astrometry and time-series photometry science

Ground test results of the microvibration interference for the x-ray microcalorimeter onboard x-ray imaging and spectroscopy mission

Ground test results of the electromagnetic interference for the x-ray microcalorimeter onboard XRISM

X-ray Time Lag Evaluation of MAXI J1820+070 with a Differential Cross-correlation Analysis

X-ray and optical spectroscopic study of a gamma Cassiopeiae analog source pi Aquarii

Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey

Mechanical Cryocooler Noise Observed in the Ground Testing of the Resolve X-ray Microcalorimeter Onboard XRISM

X-Ray Spectral Variations of Circinus X-1 Observed with NICER throughout an Entire Orbital Cycle

Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Design of the On-Board Data Compression for the Bolometer Data of LiteBIRD

Deep near-infrared imaging observation of the faint X-ray point sources constituting the Galactic bulge X-ray emission

Sensitivity Modeling for LiteBIRD

Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB B-modes

X-ray transmission calibration of the gate valve for the x-ray astronomy satellite XRISM

Cooling system for the Resolve onboard XRISM

Collaborators (18)

Tommaso Ghigna

Noriko Yamasaki

Masashi Hazumi

H. Nishino

Andrea Tartari

Keiichi Wada

Peter Camps

Misaki Mizumoto

Paul Draghis

Gary Ferland

Yuji Chinone

T. Enoto

Thuong Hoang

Yuto Minami

Samantha Stever

Wataru Iwakiri

Ryuichi Fujimoto

Ken Ebisawa

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