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Shotaro Sakai

Has grant

Assistant Professor (Tenure track)

Keio University Shonan Fujisawa

Japan

Research Interests

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About

Shotaro Sakai is an Assistant Professor at Tohoku University in Japan. His research primarily focuses on planetary atmospheres and magnetospheres, with recent contributions to understanding Martian phenomena through articles on the Martian Moons eXploration (MMX) mission and the plasma dynamics of Mars. He also explores topics related to exospheric densities and the implications of magnetic fields on planetary ion escape.

Recent Grants

Grant: Open

Study on the atmospheric evolution of planets with Earth-like atmospheres

Open Date: 2025-04-01

Close Date: 2028-03-01

Grant: Open

New isotope obervations of Mars atmsopheric evolution: International collaboration of European and Japanese Mars exploration missions

Open Date: 2022-10-01

Close Date: 2027-03-01

Grant: Close

Influence of stellar spectra on the evolution of planetary atmospheres

Open Date: 2022-04-01

Close Date: 2025-03-01

Grant: Close

Dust-plasma interaction in Saturn's inner magnetosphere

Open Date: 2012-04-01

Close Date: 2014-03-01

Articles (28)

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2022

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2021

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2021

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2020

Collaborators (27)

Aoki Shohei

University of Tokyo

JAPAN

Shotaro Sakai

Research Interests

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About

Recent Grants

Articles (28)

Oxygen Isotope Fractionation in the Martian Atmosphere Induced by CO2 Photolysis and O3 Formation

Dawn–Dusk Asymmetry of the Io Plasma Torus Derived from Io’s Auroral Footprints Observed by Juno-UVS

Effects of Hot Oxygen Corona on Ion Escape From Venus‐Like Planets

Effects of stellar XUV spectra on atmospheric escape from a Mars-like planet orbiting inactive low-mass stars

Asymmetrically Distributed Kelvin‐Helmholtz Instability at Venusian Magnetosphere

Magnetic field experiment at Phobos and in space around Mars by the Martian Moons eXploration (MMX) mission

Pre-flight performance of the ion energy mass spectrum analyzer for the Martian Moons eXploration (MMX) mission

A Technique for Retrieving the Exospheric Number Density Distribution from Pickup Ion Ring Distributions

Effects of an Intrinsic Magnetic Field on Ion Escape From Ancient Mars Based on MAESTRO Multifluid MHD Simulations

On the Periodic Variation of the Ion Density in the Martian Dayside Ionosphere During the Regional Dust Storm in September 2016

Changes in the Plasma Sheet Conditions at Europa's Orbit Retrieved From Lead Angle of the Satellite Auroral Footprints

Ray Tracing for Jupiter's Icy Moon Ionospheric Occultation of Jovian Auroral Radio Sources

Reduced Water Loss due to Photochemistry on Terrestrial Planets in the Runaway Greenhouse Phase around Pre-main-sequence M Dwarfs

C+ 133.5 nm Emission Mechanisms on Mars Revealed by the MAVEN Observations

Different Behavior of Density Perturbations Between Dayside and Nightside in the Martian Thermosphere and the Ionosphere Associated With Atmospheric Gravity Waves

Comprehensive Comparison of Two Global Multi‐Species MHD Models of Mars

Interpretation of the North‐South Asymmetric Oxygen Aurora Morphology on Europa Using Test Particle Simulation

Study of Atmospheric Ion Escape From Exoplanet TOI‐700 d: Venus Analogs

Strong Depletion of 13C in CO Induced by Photolysis of CO2 in the Martian Atmosphere, Calculated by a Photochemical Model

Enhanced Ion Escape Rate During IMF Rotation Under Weak Intrinsic Magnetic Field Conditions on a Mars‐Like Planet

Numerical Prediction of Changes in Atmospheric Chemical Compositions During a Solar Energetic Particle Event on Mars

Photochemical and radiation transport model for extensive use (PROTEUS)

Multispecies MHD Study of Ion Escape at Ancient Mars: Effects of an Intrinsic Magnetic Field and Solar XUV Radiation

Formation Mechanisms of the Molecular Ion Polar Plume and Its Contribution to Ion Escape From Mars

Modeling of Diffuse Auroral Emission at Mars: Contribution of MeV Protons

Seasonal and Dust‐Related Variations in the Dayside Thermospheric and Ionospheric Compositions of Mars Observed by MAVEN/NGIMS

Effects of the IMF Direction on Atmospheric Escape From a Mars‐like Planet Under Weak Intrinsic Magnetic Field Conditions

Effects of an Intrinsic Magnetic Field on Ion Loss From Ancient Mars Based on Multispecies MHD Simulations

Collaborators (27)

Aoki Shohei

Ryoya Sakata

B. Bonfond

Ryuho Kataoka

Kei Masunaga

Kazuhiro Yamamoto

Kiyoka Murase

Christopher Fowler

Jonathan Nichols

Majd Mayyasi

Juan Alday

Hiroaki Misawa

Tatsuya Yoshida

Yuki Harada

Yusuke Ebihara

Arihiro Kamada

Lori Neary

Fuminori Tsuchiya

DAVID BRAIN

Scott England

S. Curry

JUSTIN DEIGHAN

NICHOLAS SCHNEIDER

Kanako Seki

A. Nakayama

Jiuhou Lei

Vincent Hue

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