Author

Sotani, Hajime

INSPIRE profile988012 ORCID0000-0002-3239-2921

42 papers·1,320 citations in this corpus

	Paper	Category
Aug 4, 2026#152608.02463	The $g$ -mode frequencies in cold neutron stars and nuclear saturation parameters Hajime Sotani · Hajime Togashi	nucl-th	PRD	0
May 6, 2026#82605.03305	Non-radial pulsations of gravitationally coupled two-fluid neutron stars in general relativity Ankit Kumar · Daniel A. Caballero · Hajime Sotani · Nicolás Yunes	↳ gr-qc	PRD	4
Mar 16, 2026#72603.12613	Slowly Rotating Two-Fluid Neutron Stars: Coupled Frame-Dragging, Inertia Splitting, and Universal Relations Ankit Kumar · Hajime Sotani	↳ astro-ph.HE	PRD	4
Feb 17, 2026#92602.14353	Estimation of neutron star mass and radius of FRB 20240114A by identification of crustal oscillations Hajime Sotani · Zorawar Wadiasingh · Cecilia Chirenti	↳ astro-ph.HE	ApJL	2
Dec 29, 2025#122512.20867	Universal relations between the quasinormal modes of neutron stars and magnetic tidal deformability Hajime Sotani	↳ astro-ph.HE	PRD	2
Sep 5, 2025#92509.03862	Stability analysis of two-fluid neutron stars featuring twin star and ultradense configurations Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵	↳ astro-ph.HE	PRD	10
Jan 14, 2025#92501.07052	Impact of dark matter distribution on neutron star properties Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵	↳ astro-ph.HE	PRD	23
Aug 29, 2024#22408.15312	Constraints on the parameter space in dark matter admixed neutron stars Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵	↳ astro-ph.HE	PRD	25
Jul 15, 2024#72407.09446	Neutron-quark stars: Discerning viable alternatives for the higher-density part of the equation of state of compact stars Sudipta Hensh🇯🇵 · Yong-Jia Huang🇨🇳 · Toru Kojo🇯🇵 · Luca Baiotti🇯🇵 · Kentaro Takami🇯🇵 · Shigehiro Nagataki🇯🇵 · Hajime Sotani🇯🇵	↳ astro-ph.HE	ApJL	14
May 21, 2024#132405.11858	Magnetar QPOs and neutron star crust elasticity Hajime Sotani	↳ astro-ph.HE	Universe	19
Jan 17, 2024#242401.08382	Shear oscillations in neutron stars and the nuclear symmetry energy Hajime Sotani	↳ astro-ph.HE	PRD	10
Aug 23, 2023#92308.11494	Universality in quasinormal modes of neutron stars with quark-hadron crossover Hajime Sotani🇯🇵 · Toru Kojo🇯🇵	↳ astro-ph.HE	PRD	12
Jun 14, 2023#52306.07531	Shear and interface modes in neutron stars with pasta structures Hajime Sotani	↳ astro-ph.HE	PRD	11
Mar 8, 2023#12303.03631	Empirical neutron star mass formula based on experimental observables Hajime Sotani · Tomoya Naito	nucl-th	PRC	14
Mar 7, 2023#152303.03150	Neutron star mass-radius constraints using the high-frequency QPOs of GRB 200415A H. Sotani · K. D. Kokkotas · N. Stergioulas	↳ astro-ph.HE	Astron.Astrophys.	24
Oct 24, 2022#12210.11651	Neutron star mass formula with nuclear saturation parameters for asymmetric nuclear matter Hajime Sotani · Shinsuke Ota	nucl-th	PRD	22
Sep 13, 2022#72209.05416	Effects of finite sizes of atomic nuclei on shear modulus and torsional oscillations in neutron stars Hajime Sotani · Hajime Togashi · Masatoshi Takano	nucl-th	MNRAS	6
Mar 18, 2022#12203.09004	Neutron star mass formula with nuclear saturation parameters Hajime Sotani · Hajime Togashi	nucl-th	PRD	9
Mar 11, 2022#52203.05410	New constraints on the neutron-star mass and radius relation from terrestrial nuclear experiments Hajime Sotani · Nobuya Nishimura · Tomoya Naito	nucl-th	PTEP	31
Mar 10, 2022#92203.04528	Merger and post-merger of binary neutron stars with a quark-hadron crossover equation of state Yong-Jia Huang🇨🇳 · Luca Baiotti🇯🇵 · Toru Kojo🇨🇳 · Kentaro Takami🇯🇵 · Hajime Sotani🇯🇵 · Hajime Togashi🇯🇵 · Tetsuo Hatsuda🇯🇵 · Shigehiro Nagataki🇯🇵 · Yi-Zhong Fan🇨🇳	↳ astro-ph.HE	PRL	93
May 28, 2021#82105.13212	Neutron star asteroseismology and nuclear saturation parameter Hajime Sotani	↳ astro-ph.HE	PRD	34
Nov 9, 2020#42011.03167	Estimating the nuclear saturation parameter via low-mass neutron star asteroseismology Hajime Sotani	↳ astro-ph.HE	PRD	21
Aug 25, 2020#62008.09839	Gravitational wave asteroseismology for low-mass neutron stars Hajime Sotani	↳ astro-ph.HE	PRD	24
Jun 18, 2019#91906.06999	Astrophysical implications of double-layer torsional oscillations in a neutron star crust as a lasagna sandwich Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu	↳ astro-ph.HE	MNRAS	50
Jul 3, 2018#91807.00528	Constraints on the nuclear equation of state and the neutron star structure from crustal torsional oscillations Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	MNRAS	52
Aug 15, 2017#101708.03738	Probing mass-radius relation of protoneutron stars from gravitational-wave asteroseismology Hajime Sotani🇯🇵 · Takami Kuroda🇨🇭 · Tomoya Takiwaki🇯🇵 · Kei Kotake🇯🇵	↳ astro-ph.HE	PRD	66
Jun 16, 2017#71706.04736	Probing crustal structures from neutron star compactness Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu	↳ astro-ph.HE	MNRAS	27
Feb 28, 2017#121702.07843	Hybrid Quark Stars With Strong Magnetic Field T. Tatsumi🇯🇵 · H. Sotani🇯🇵	↳ astro-ph.HE	PoS	0
Jan 24, 2017#121701.06361	Quark matter with strong magnetic field and possibility of the third family of compact stars Hajime Sotani🇯🇵 · Toshitaka Tatsumi🇯🇵	↳ astro-ph.HE	MNRAS	12
Jan 23, 2017#31701.05646	Effect of nuclear saturation parameters on possible maximum mass of neutron stars Hajime Sotani🇯🇵	↳ astro-ph.HE	PRC	19
Sep 8, 2016#71609.01802	Probing nuclear bubble structure via neutron star asteroseismology Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu	↳ astro-ph.HE	MNRAS	48
Aug 4, 2016#51608.01048	Gravitational wave asteroseismology with protoneutron stars Hajime Sotani🇯🇵 · Tomoya Takiwaki🇯🇵	↳ astro-ph.HE	PRD	81
Feb 16, 2016#61602.04558	Empirical formula of crustal torsional oscillations Hajime Sotani🇯🇵	↳ astro-ph.HE	PRD	16
Jan 15, 2016#81601.03407	Low-mass neutron stars: universal relations, the nuclear symmetry energy and gravitational radiation Hector O. Silva🇺🇸 · Hajime Sotani🇯🇵 · Emanuele Berti🇵🇹	↳ astro-ph.HE	MNRAS	51
Aug 11, 2015#81508.01728	Possible identifications of newly observed magnetar quasi-periodic oscillations as crustal shear modes Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	New Astron.	50
Jan 9, 2015#31501.01698	Constraining the density dependence of the nuclear symmetry energy from an X-ray bursting neutron star Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	PRC	18
Apr 23, 2014#5*1404.5369	Observational discrimination of Eddington-inspired Born-Infeld gravity from general relativity Hajime Sotani	↳ astro-ph.HE	PRD	40
Jan 1, 2014#5*1401.0161	Mass and radius formulas for low-mass neutron stars Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu · Akira Ohnishi	↳ astro-ph.HE	PTEP	62
Mar 20, 2013#6*1303.4500	Possible Constraints on the Density Dependence of the Nuclear Symmetry Energy from Quasiperiodic Oscillations in Soft Gamma Repeaters Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	MNRAS	72
Oct 4, 2012#9*1210.0955	Effect of superfluidity on neutron star crustal oscillations Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	MNRAS	91
Aug 3, 2012#9*1208.0427	Thermodynamical description of hadron-quark phase transition and its implications on compact-star phenomena Nobutoshi Yasutake · Tsuneo Noda · Hajime Sotani · Toshiki Maruyama · Toshitaka Tatsumi	↳ astro-ph.HE	—	18
Feb 29, 2012#3*1202.6242	Probing the Equation of State of Nuclear Matter via Neutron Star Asteroseismology Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵	↳ astro-ph.HE	PRL	133

The $g$ -mode frequencies in cold neutron stars and nuclear saturation parameters
Hajime Sotani · Hajime Togashi
Aug 4, 2026#15nucl-thPRD0 citations
Non-radial pulsations of gravitationally coupled two-fluid neutron stars in general relativity
Ankit Kumar · Daniel A. Caballero · Hajime Sotani · Nicolás Yunes
May 6, 2026#8↳ gr-qcPRD4 citations
Slowly Rotating Two-Fluid Neutron Stars: Coupled Frame-Dragging, Inertia Splitting, and Universal Relations
Ankit Kumar · Hajime Sotani
Mar 16, 2026#7↳ astro-ph.HEPRD4 citations
Estimation of neutron star mass and radius of FRB 20240114A by identification of crustal oscillations
Hajime Sotani · Zorawar Wadiasingh · Cecilia Chirenti
Feb 17, 2026#9↳ astro-ph.HEApJL2 citations
Universal relations between the quasinormal modes of neutron stars and magnetic tidal deformability
Hajime Sotani
Dec 29, 2025#12↳ astro-ph.HEPRD2 citations
Stability analysis of two-fluid neutron stars featuring twin star and ultradense configurations
Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵
Sep 5, 2025#9↳ astro-ph.HEPRD10 citations
Impact of dark matter distribution on neutron star properties
Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵
Jan 14, 2025#9↳ astro-ph.HEPRD23 citations
Constraints on the parameter space in dark matter admixed neutron stars
Ankit Kumar🇯🇵 · Hajime Sotani🇯🇵
Aug 29, 2024#2↳ astro-ph.HEPRD25 citations
Neutron-quark stars: Discerning viable alternatives for the higher-density part of the equation of state of compact stars
Sudipta Hensh🇯🇵 · Yong-Jia Huang🇨🇳 · Toru Kojo🇯🇵 · Luca Baiotti🇯🇵 · Kentaro Takami🇯🇵 · Shigehiro Nagataki🇯🇵 · Hajime Sotani🇯🇵
Jul 15, 2024#7↳ astro-ph.HEApJL14 citations
Magnetar QPOs and neutron star crust elasticity
Hajime Sotani
May 21, 2024#13↳ astro-ph.HEUniverse19 citations
Shear oscillations in neutron stars and the nuclear symmetry energy
Hajime Sotani
Jan 17, 2024#24↳ astro-ph.HEPRD10 citations
Universality in quasinormal modes of neutron stars with quark-hadron crossover
Hajime Sotani🇯🇵 · Toru Kojo🇯🇵
Aug 23, 2023#9↳ astro-ph.HEPRD12 citations
Shear and interface modes in neutron stars with pasta structures
Hajime Sotani
Jun 14, 2023#5↳ astro-ph.HEPRD11 citations
Empirical neutron star mass formula based on experimental observables
Hajime Sotani · Tomoya Naito
Mar 8, 2023#1nucl-thPRC14 citations
Neutron star mass-radius constraints using the high-frequency QPOs of GRB 200415A
H. Sotani · K. D. Kokkotas · N. Stergioulas
Mar 7, 2023#15↳ astro-ph.HEAstron.Astrophys.24 citations
Neutron star mass formula with nuclear saturation parameters for asymmetric nuclear matter
Hajime Sotani · Shinsuke Ota
Oct 24, 2022#1nucl-thPRD22 citations
Effects of finite sizes of atomic nuclei on shear modulus and torsional oscillations in neutron stars
Hajime Sotani · Hajime Togashi · Masatoshi Takano
Sep 13, 2022#7nucl-thMNRAS6 citations
Neutron star mass formula with nuclear saturation parameters
Hajime Sotani · Hajime Togashi
Mar 18, 2022#1nucl-thPRD9 citations
New constraints on the neutron-star mass and radius relation from terrestrial nuclear experiments
Hajime Sotani · Nobuya Nishimura · Tomoya Naito
Mar 11, 2022#5nucl-thPTEP31 citations
Merger and post-merger of binary neutron stars with a quark-hadron crossover equation of state
Yong-Jia Huang🇨🇳 · Luca Baiotti🇯🇵 · Toru Kojo🇨🇳 · Kentaro Takami🇯🇵 · Hajime Sotani🇯🇵 · Hajime Togashi🇯🇵 · Tetsuo Hatsuda🇯🇵 · Shigehiro Nagataki🇯🇵 · Yi-Zhong Fan🇨🇳
Mar 10, 2022#9↳ astro-ph.HEPRL93 citations
Neutron star asteroseismology and nuclear saturation parameter
Hajime Sotani
May 28, 2021#8↳ astro-ph.HEPRD34 citations
Estimating the nuclear saturation parameter via low-mass neutron star asteroseismology
Hajime Sotani
Nov 9, 2020#4↳ astro-ph.HEPRD21 citations
Gravitational wave asteroseismology for low-mass neutron stars
Hajime Sotani
Aug 25, 2020#6↳ astro-ph.HEPRD24 citations
Astrophysical implications of double-layer torsional oscillations in a neutron star crust as a lasagna sandwich
Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu
Jun 18, 2019#9↳ astro-ph.HEMNRAS50 citations
Constraints on the nuclear equation of state and the neutron star structure from crustal torsional oscillations
Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Jul 3, 2018#9↳ astro-ph.HEMNRAS52 citations
Probing mass-radius relation of protoneutron stars from gravitational-wave asteroseismology
Hajime Sotani🇯🇵 · Takami Kuroda🇨🇭 · Tomoya Takiwaki🇯🇵 · Kei Kotake🇯🇵
Aug 15, 2017#10↳ astro-ph.HEPRD66 citations
Probing crustal structures from neutron star compactness
Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu
Jun 16, 2017#7↳ astro-ph.HEMNRAS27 citations
Hybrid Quark Stars With Strong Magnetic Field
T. Tatsumi🇯🇵 · H. Sotani🇯🇵
Feb 28, 2017#12↳ astro-ph.HEPoS0 citations
Quark matter with strong magnetic field and possibility of the third family of compact stars
Hajime Sotani🇯🇵 · Toshitaka Tatsumi🇯🇵
Jan 24, 2017#12↳ astro-ph.HEMNRAS12 citations
Effect of nuclear saturation parameters on possible maximum mass of neutron stars
Hajime Sotani🇯🇵
Jan 23, 2017#3↳ astro-ph.HEPRC19 citations
Probing nuclear bubble structure via neutron star asteroseismology
Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu
Sep 8, 2016#7↳ astro-ph.HEMNRAS48 citations
Gravitational wave asteroseismology with protoneutron stars
Hajime Sotani🇯🇵 · Tomoya Takiwaki🇯🇵
Aug 4, 2016#5↳ astro-ph.HEPRD81 citations
Empirical formula of crustal torsional oscillations
Hajime Sotani🇯🇵
Feb 16, 2016#6↳ astro-ph.HEPRD16 citations
Low-mass neutron stars: universal relations, the nuclear symmetry energy and gravitational radiation
Hector O. Silva🇺🇸 · Hajime Sotani🇯🇵 · Emanuele Berti🇵🇹
Jan 15, 2016#8↳ astro-ph.HEMNRAS51 citations
Possible identifications of newly observed magnetar quasi-periodic oscillations as crustal shear modes
Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Aug 11, 2015#8↳ astro-ph.HENew Astron.50 citations
Constraining the density dependence of the nuclear symmetry energy from an X-ray bursting neutron star
Hajime Sotani🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Jan 9, 2015#3↳ astro-ph.HEPRC18 citations
Observational discrimination of Eddington-inspired Born-Infeld gravity from general relativity
Hajime Sotani
Apr 23, 2014#5*↳ astro-ph.HEPRD40 citations
Mass and radius formulas for low-mass neutron stars
Hajime Sotani · Kei Iida · Kazuhiro Oyamatsu · Akira Ohnishi
Jan 1, 2014#5*↳ astro-ph.HEPTEP62 citations
Possible Constraints on the Density Dependence of the Nuclear Symmetry Energy from Quasiperiodic Oscillations in Soft Gamma Repeaters
Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Mar 20, 2013#6*↳ astro-ph.HEMNRAS72 citations
Effect of superfluidity on neutron star crustal oscillations
Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Oct 4, 2012#9*↳ astro-ph.HEMNRAS91 citations
Thermodynamical description of hadron-quark phase transition and its implications on compact-star phenomena
Nobutoshi Yasutake · Tsuneo Noda · Hajime Sotani · Toshiki Maruyama · Toshitaka Tatsumi
Aug 3, 2012#9*↳ astro-ph.HE18 citations
Probing the Equation of State of Nuclear Matter via Neutron Star Asteroseismology
Hajime Sotani🇯🇵 · Ken'ichiro Nakazato🇯🇵 · Kei Iida🇯🇵 · Kazuhiro Oyamatsu🇯🇵
Feb 29, 2012#3*↳ astro-ph.HEPRL133 citations

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