HK
Hajime Kawahara
The University of Tokyo, Japan Aerospace Exploration Agency/Institute of Space and Astronautical Science
Research areas: Physics and Astronomy · Astronomy and Astrophysics · Stellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Adaptive optics and wavefront sensing
0000-0003-3309-9134
Employment
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The University of Tokyo Assistant Professor2012 - Present
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Japan Aerospace Exploration Agency/Institute of Space and Astronautical Science
Education
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The University of Tokyo Ph.D.2004 - 2009
Projects & Funding
Projects & funding information is unavailable.
Publications (65)
- Hybrid Spin–Orbit Tomography for Earth-like Planets: Simultaneous Mapping of Static Surfaces and Dynamic Clouds from Multicolor Light Curves Save
- Bayesian Doppler Imaging: Simultaneous Inference of Surface Maps and Geometric Parameters Save
- Erratum: “Probing 2D Asymmetries of an Exoplanet Atmosphere from Chromatic Transit Variation” (2025, AJ, 169, 255) Save
- ExoJAX Retrievals of VLT/CRIRES Spectra of Luhman 16AB: C/O Ratios and Systematic Uncertainties Save
- PyIRD: A Python-Based Data Reduction Pipeline for Subaru/IRD and REACH Save
- microJAX: A Differentiable Framework for Microlensing Modeling with GPU-accelerated Image-centered Ray Shooting Save
- Unveiling the Atmosphere of HR 7672 B from the Near-infrared High-resolution Spectrum Using REACH/Subaru Save
- Atmospheric Retrieval of Subaru/IRD High-resolution Spectrum of the Archetype T-type Brown Dwarf Gl 229 B* Save
- Differentiable Modeling of Planet and Substellar Atmosphere: High-resolution Emission, Transmission, and Reflection Spectroscopy with ExoJAX2 Save
- Measurement of Methane Line Broadening in Hot Hydrogen/Helium Atmospheres at λ = 1.60–1.63 μm for Substellar Object Spectroscopy Save
- Probing Two-dimensional Asymmetries of an Exoplanet Atmosphere from Chromatic Transit Variation Save
- Weighing Single-lined Spectroscopic Binaries Using Tidal Effects on Radial Velocities: The Case of V723 Monocerotis Save
- A Spectroscopic Thermometer: Individual Vibrational Band Spectroscopy with the Example of OH in the Atmosphere of WASP-33b Save
- Fast optical flares from M dwarfs detected by a one-second-cadence survey with Tomo-e Gozen Save
- Global Mapping of Surface Composition on an Exo-Earth Using Sparse Modeling Save
- Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers Save
- Polarization-based Speckle Nulling Using a Spatial Light Modulator to Generate a Wide-field Dark Hole Save
- Autodifferentiable Spectrum Model for High-dispersion Characterization of Exoplanets and Brown Dwarfs Save
- Neutral Metals in the Atmosphere of HD 149026b Save
- First Detection of Hydroxyl Radical Emission from an Exoplanet Atmosphere: High-dispersion Characterization of WASP-33b Using Subaru/IRD Save