HK
Hajime Kawahara
astro-ph.EPastro-ph.IMastro-ph.SRastro-ph.COastro-phastro-ph.GAastro-ph.HE
On Valency
published · living versionsW_x3w3aqyd·v1 · currentpublished
Self-lensing Discovery of a White Dwarf in an Unusually Wide Orbit Around a Sun-like Star
with Kento Masuda, David W. Latham, Allyson Bieryla, Masanobu Kunitomo +2
1 version
W_6j2hpzkw·v1published
Preprints & journals
58 papers in the corpus · 2005–2026Hybrid Spin-Orbit Tomography for Earth-like Planets: Simultaneous Mapping of Static Surfaces and Dynamic Clouds from Multicolor Light Curves2609.09803v1 · Atsuki Kuwata, Hajime Kawahara2026 · 0 citationsarXiv
Japan's Possible Contributions for Coronagraph of the Habitable Worlds Observatory (HWO)2606.13440v1 · Keigo Enya, Kenta Yoneta, Naoshi Murakami et al.2026 · 0 citationsarXiv
Bayesian Doppler Imaging: Simultaneous Inference of Surface Maps and Geometric Parameters2605.08544v1 · Yamato Ureshino, Hajime Kawahara, Hibiki Yama et al.2026 · 0 citationsarXiv
Discovery of a Low-Mass Companion to the Accelerating Star HIP 53005 with Strongly Conflicting Mass Estimates2604.03767v1 · Taichi Uyama, Thayne Currie, Jerry W. Xuan et al.2026 · 0 citationsarXiv
PyIRD: A Python-Based Data Reduction Pipeline for Subaru/IRD and REACH2601.12669v1 · Yui Kasagi, Hajime Kawahara, Ziying Gu et al.2026 · 0 citationsJournal of Open Source Software, 11(117), 9126 (2026)
microJAX: A Differentiable Framework for Microlensing Modeling with GPU-Accelerated Image-Centered Ray Shooting2510.02639v1 · Shota Miyazaki, Hajime Kawahara2025 · 1 citationarXiv
Unveiling the Atmosphere of HR 7672 B from the Near-Infrared High-Resolution Spectrum Using REACH/Subaru2508.01281v1 · Yui Kasagi, Yui Kawashima, Hajime Kawahara et al.2025 · 2 citationsarXiv
Measurement of Methane Line Broadening in Hot Hydrogen/Helium Atmospheres at = 1.60-1.63 \mu m for Substellar Object Spectroscopy2503.22031v1 · Ko Hosokawa, Takayuki Kotani, Hajime Kawahara et al.2025 · 1 citationarXiv
Probing Two-dimensional Asymmetries of an Exoplanet Atmosphere from Chromatic Transit Variation2503.08988v2 · Shotaro Tada, Hajime Kawahara, Yui Kawashima et al.2025 · 4 citationsAJ, 169, 255 (2025)
Weighing Single-lined Spectroscopic Binaries Using Tidal Effects on Radial Velocities: The Case of V723 Monocerotis2410.22083v1 · Mio Tomoyoshi, Kento Masuda, Teruyuki Hirano et al.2024 · 3 citationsarXiv
Atmospheric retrieval of Subaru/IRD high-resolution spectrum of the archetype T-type brown dwarf Gl 229 B2410.11561v2 · Yui Kawashima, Hajime Kawahara, Yui Kasagi et al.2024 · 3 citationsarXiv
Differentiable Modeling of Planet and Substellar Atmosphere: High-Resolution Emission, Transmission, and Reflection Spectroscopy with ExoJAX22410.06900v3 · Hajime Kawahara, Yui Kawashima, Shotaro Tada et al.2024 · 6 citationsApJ 985,263 (2025)
JASMINE image simulator for high-precision astrometry and photometry2410.03149v1 · Takafumi Kamizuka, Hajime Kawahara, Ryou Ohsawa et al.2024 · 2 citationsProc. SPIE, 13099, 130992D (2024)
JASMINE: Near-Infrared Astrometry and Time Series Photometry Science2307.05666v2 · Daisuke Kawata, Hajime Kawahara, Naoteru Gouda et al.2023 · 25 citationsarXiv
A spectroscopic thermometer: individual vibrational band spectroscopy with the example of OH in the atmosphere of WASP-33b2305.11071v1 · Sam O.M. Wright, Stevanus K. Nugroho, Matteo Brogi et al.2023 · 16 citationsarXiv
Fast optical flares from M dwarfs detected by a one-second-cadence survey with Tomo-e Gozen2206.12847v1 · Masataka Aizawa, Kojiro Kawana, Kazumi Kashiyama et al.2022 · 29 citationsarXiv
A Super-Earth Orbiting Near the Inner Edge of the Habitable Zone around the M4.5-dwarf Ross 5082205.11986v1 · Hiroki Harakawa, Takuya Takarada, Yui Kasagi et al.2022 · 17 citationsarXiv
Global Mapping of Surface Composition on an Exo-Earth Using Sparse Modeling2204.01996v1 · Atsuki Kuwata, Hajime Kawahara, Masataka Aizawa et al.2022 · 4 citationsarXiv
Images of Embedded Jovian Planet Formation At A Wide Separation Around AB Aurigae2204.00633v1 · Thayne Currie, Kellen Lawson, Glenn Schneider et al.2022 · 162 citationsarXiv
Dippers from TESS Full-frame Images. II. Spectroscopic Characterization of Four Young Dippers2201.09459v1 · Yui Kasagi, Takayuki Kotani, Hajime Kawahara et al.2022 · 1 citationarXiv
SCExAO, a testbed for developing high-contrast imaging technologies for ELTs2109.13353v2 · Kyohoon Ahn, Olivier Guyon, Julien Lozi et al.2021 · 10 citationsarXiv
Auto-Differentiable Spectrum Model for High-Dispersion Characterization of Exoplanets and Brown Dwarfs2105.14782v2 · Hajime Kawahara, Yui Kawashima, Kento Masuda et al.2021 · 33 citationsarXiv
First Detection of Hydroxyl Radical Emission from an Exoplanet Atmosphere: High-dispersion Characterization of WASP-33b using Subaru/IRD2103.03094v1 · Stevanus K. Nugroho, Hajime Kawahara, Neale P. Gibson et al.2021 · 75 citationsarXiv
Neutral metals in the atmosphere of HD149026b2102.00211v1 · Masato Ishizuka, Hajime Kawahara, Stevanus K. Nugroho et al.2021 · 20 citationsarXiv
Dippers from the TESS Full-Frame Images I: The Results of the first 1 year data and Discovery of A Runaway dipper2009.12830v1 · Tomoyuki Tajiri, Hajime Kawahara, Masataka Aizawa et al.2020 · 1 citationarXiv
Searching for Thermal Inversion Agents in the Transmission Spectrum of MASCARA-2b/KELT-20b: Detection of Neutral Iron and Ionised Calcium HK Lines2003.04856v3 · Stevanus K. Nugroho, Neale P. Gibson, Ernst J. W. de Mooij et al.2020 · 85 citationsarXiv
Self-lensing Discovery of a White Dwarf in an Unusually Wide Orbit Around a Sun-like Star1907.07656v2 · Kento Masuda, Hajime Kawahara, David W. Latham et al.2019 · 59 citationsarXivon Valency
Directly Imaging Rocky Planets from the Ground1905.04275v1 · B. Mazin, 'E. Artigau, V. Bailey et al.2019 · 4 citationsarXiv
X-ray study of the double radio relic Abell 3376 with Suzaku1806.07817v1 · I. Urdampilleta, H. Akamatsu, F. Mernier et al.2018 · 43 citationsA&A 618, A74 (2018)
Systematic Search for Rings around Kepler Planet Candidates: Constraints on Ring Size and Occurrence Rate1803.09114v1 · Masataka Aizawa, Kento Masuda, Hajime Kawahara et al.2018 · 17 citationsarXiv
Discovery of three self-lensing binaries from Kepler1801.07874v1 · Hajime Kawahara, Kento Masuda, Morgan MacLeod et al.2018 · 53 citationsarXiv
Pioneering high contrast science instruments for planet characterization on giant segmented mirror telescopes1712.08584v1 · N. Jovanovic, O. Guyon, J. Lozi et al.2017 · 0 citationsarXiv
Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 with a radio relic1708.07004v1 · Madoka Itahana, Motokazu Takizawa, Hiroki Akamatsu et al.2017 · 8 citationsarXiv
Application of Multicore Optical Fibers in Astronomy1704.01274v1 · Nemanja Jovanovic, Olivier Guyon, Hajime Kawahara et al.2017 · 3 citationsarXiv
Frequency Modulation of Directly Imaged Exoplanets: Geometric Effect as a Probe of Planetary Obliquity1603.02898v3 · Hajime Kawahara2016 · 32 citationsApJ 822, 112 (2016)
Absolute Dimensions of a Flat Hierarchical Triple System KIC 6543674 from the Kepler Photometry1506.01891v1 · Kento Masuda, Sho Uehara, Hajime Kawahara2015 · 14 citationsAstrophys.J.806:L37-L43,2015
Lifetime and Spectral Evolution of a Magma Ocean with a Steam Atmosphere: Its Detectability by Future Direct Imaging1505.03552v1 · Keiko Hamano, Hajime Kawahara, Yutaka Abe et al.2015 · 65 citationsarXiv
Theoretical Emission Spectra of Atmospheres of Hot Rocky Super-Earths1501.05393v2 · Yuichi Ito, Masahiro Ikoma, Hajime Kawahara et al.2015 · 130 citationsarXiv
Characterizing Earth-like Planets Using a Combination of High-Dispersion Spectroscopy and High-Contrast Instruments: Doppler-shifted Water and Oxygen Lines1409.5740v2 · Hajime Kawahara, Teruyuki Hirano2014 · 3 citationsarXiv
Exploring Hot Gas at Junctions of Galaxy Filaments with Suzaku1311.5042v1 · Ikuyuki Mitsuishi, Hajime Kawahara, Norio Sekiya et al.2013 · 3 citationsarXiv
Starspots - Transit Depth Relation of the Evaporating Planet Candidate KIC 12557548b1308.1585v4 · Hajime Kawahara, Teruyuki Hirano, Kenji Kurosaki et al.2013 · 46 citationsThe Astrophysical Journal Letters, 776,L6 (2013)
The ASTRO-H X-ray Observatory1210.4378v1 · Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley et al.2012 · 110 citationsarXiv
Can Ground-based Telescopes Detect The Oxygen 1.27 Micron Absorption Feature as a Biomarker in Exoplanets ?1206.0558v2 · Hajime Kawahara, Taro Matsuo, Michihiro Takami et al.2012 · 43 citationsThe Astrophysical Journal 758, 13 (2012)
Probing the extreme planetary atmosphere of WASP-12b1205.4736v2 · Mark Swain, Pieter Deroo, Giovanna Tinetti et al.2012 · 130 citationsarXiv
Mapping Earth Analogs from Photometric Variability: Spin-Orbit Tomography for Planets in Inclined Orbits1204.3504v2 · Yuka Fujii, Hajime Kawahara2012 · 105 citationsApJ, 755, 101 (2012)
Systematic X-ray Analysis of Radio Relic Clusters with SUZAKU1112.3030v2 · Hiroki Akamatsu, Hajime Kawahara2011 · 136 citationsarXiv
ORIGIN: Metal Creation and Evolution from the Cosmic Dawn1104.2048v2 · J.W. den Herder, L. Piro, T. Ohashi et al.2011 · 7 citationsExp Astron (2012) 34, 519
Colors of a Second Earth II: Effects of Clouds on Photometric Characterization of Earth-like Exoplanets1102.3625v3 · Yuka Fujii, Hajime Kawahara, Yasushi Suto et al.2011 · 73 citationsarXiv
SUZAKU Observation of a New Merging Group of Galaxies at a Filamentary Junction1101.0614v1 · Hajime Kawahara, Hiroshi Yoshitake, Takahiro Nishimichi et al.2011 · 8 citationsApJ,727,L38 (2011)
Studying the Warm-Hot Intergalactic Medium in Emission1011.2116v2 · Yoh Takei, Eugenio Ursino, Enzo Branchini et al.2010 · 25 citationsarXiv
Career total: at least 129 works. 58 are in this corpus.Showing the 50 most recent.
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