Articles by Hajime Kawahara | Synthical

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Articles by Hajime Kawahara | Synthical

Articles by Hajime Kawahara

ExoJAX Retrievals of VLT/CRIRES Spectra of Luhman 16AB: C/O Ratios and Systematic Uncertainties

28 November 2025 by Hibiki Yama and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Unveiling the Atmosphere of HR 7672 B from the Near-Infrared High-Resolution Spectrum Using REACH/Subaru

2 August 2025 by Yui Kasagi and others

Earth and Planetary Astrophysics

Atmospheric retrieval of Subaru/IRD high-resolution spectrum of the archetype T-type brown dwarf Gl 229 B

2 June 2025 by Yui Kawashima and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Differentiable Modeling of Planet and Substellar Atmosphere: High-Resolution Emission, Transmission, and Reflection Spectroscopy with ExoJAX2

12 April 2025 by Hajime Kawahara and others at

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Measurement of Methane Line Broadening in Hot Hydrogen/Helium Atmospheres at λ = 1.60-1.63 μm for Substellar Object Spectroscopy

27 March 2025 by Ko Hosokawa and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Probing 2D Asymmetries of an Exoplanet Atmosphere from Chromatic Transit Variation

12 March 2025 by Shotaro Tada and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Weighing Single-lined Spectroscopic Binaries Using Tidal Effects on Radial Velocities: The Case of V723 Monocerotis

29 October 2024 by Mio Tomoyoshi and others at

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

JASMINE image simulator for high-precision astrometry and photometry

4 October 2024 by Takafumi Kamizuka and others

Instrumentation and Methods for Astrophysics

STRAIGHTMORPH: A Voice Morphing Tool for Research in Voice Communication Sciences

24 July 2024 by P. Belin and Hiroyuki Kawahara

Animal Behavior and Cognition

JASMINE: Near-Infrared Astrometry and Time Series Photometry Science

4 March 2024 by Daisuke Kawata and others

Instrumentation and Methods for Astrophysics, Earth and Planetary Astrophysics

A spectroscopic thermometer: individual vibrational band spectroscopy with the example of OH in the atmosphere of WASP-33b

18 May 2023 by Sam O. M. Wright and others

Earth and Planetary Astrophysics

Fast optical flares from M dwarfs detected by a one-second-cadence survey with Tomo-e Gozen

26 June 2022 by Masataka Aizawa and others

Solar and Stellar Astrophysics

Measurements of protons and charged pions emitted from ν_μ charged-current interactions on iron at a mean neutrino energy of 1.49\,GeV using a nuclear emulsion detector

31 May 2022 by Hirotomo Oshima and others at

University of Tokyo

High Energy Physics

A Super-Earth Orbiting Near the Inner Edge of the Habitable Zone around the M4.5-dwarf Ross 508

24 May 2022 by Hiroki Harakawa and others

Earth and Planetary Astrophysics

Wide angle acceptance and high-speed track recognition in nuclear emulsion

26 April 2022 by Yusei Suzuki and others

Instrumentation and Detectors, High Energy Physics

Global Mapping of Surface Composition on an Exo-Earth Using Sparse Modeling

5 April 2022 by Atsuki Kuwata and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Images of Embedded Jovian Planet Formation At A Wide Separation Around AB Aurigae

1 April 2022 by Thayne Currie and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers

24 January 2022 by Yui Kasagi and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Auto-Differentiable Spectrum Model for High-Dispersion Characterization of Exoplanets and Brown Dwarfs

17 November 2021 by Hajime Kawahara and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

SCExAO, a testbed for developing high-contrast imaging technologies for ELTs

29 September 2021 by Kyohoon Ahn and others

Instrumentation and Methods for Astrophysics

First Detection of Hydroxyl Radical Emission from an Exoplanet Atmosphere: High-dispersion Characterization of WASP-33b using Subaru/IRD

4 March 2021 by Stevanus Nugroho and others at

Earth and Planetary Astrophysics

First measurement using a nuclear emulsion detector of the ν_μ charged-current cross section on iron around the 1\,GeV energy region

24 February 2021 by Hirotomo Oshima and others

High Energy Physics

Neutral metals in the atmosphere of HD149026b

30 January 2021 by Masato Ishizuka and others

Earth and Planetary Astrophysics

First measurement of \barν_μ and ν_μ charged-current inclusive interactions on water using a nuclear emulsion detector

16 October 2020 by Atsumu Hiramoto and others

High Energy Physics, Instrumentation and Detectors

Dippers from the TESS Full-Frame Images I: The Results of the first 1 year data and Discovery of A Runaway dipper

27 September 2020 by Tomoyuki Tajiri and others

Earth and Planetary Astrophysics, Astrophysics of Galaxies

Bayesian Dynamic Mapping of an Exo-Earth from Photometric Variability

26 July 2020 by Hajime Kawahara and Kento Masuda

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Detection of Fe\,{\sc i} Emission in the Day-side Spectrum of WASP-33b

10 July 2020 by Stevanus Nugroho and others

Earth and Planetary Astrophysics

Obliquity of an Earth-like planet from frequency modulation of its direct imaged lightcurve: mock analysis from general circulation model simulation

19 June 2020 by Yuta Nakagawa and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Searching for Thermal Inversion Agents in the Transmission Spectrum of MASCARA-2b/KELT-20b: Detection of Neutral Iron and Ionised Calcium H\&K Lines

27 May 2020 by Stevanus Nugroho and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Global Mapping of an Exo-Earth using Sparse Modeling

26 April 2020 by Masataka Aizawa and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

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