Ryotaro Kase

Tokyo University of Science — Japan

Physics and Astronomy · Physical Sciences

24h-index2.0kcitations60works2.02yr avg
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Research Topics

Cosmology and Gravitation Theories(53), Black Holes and Theoretical Physics(40), Pulsars and Gravitational Waves Research(24), Solar and Space Plasma Dynamics(12), Geophysics and Gravity Measurements(11)

Publications60 total

Linear perturbations of dyonic black holes in the lowest-order <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>U</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mn>1</mml:mn> <mml:mo stretchy="false">)</mml:mo> </mml:math> gauge-invariant scalar-vector-tensor theories
Physical review. D/Physical review. D.·2025Open Access
Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations
Physical review. D/Physical review. D.·2024· 2 cited
Scrutinizing black hole stability in cubic vector Galileon theories
Journal of Cosmology and Astroparticle Physics·2024· 3 cited
Scrutinizing black hole stability in cubic vector Galileon theories
arXiv (Cornell University)·2024Open Access
Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations
arXiv (Cornell University)·2024Open Access
Constraints on the black-hole charges of M87* and Sagittarius A* by changing rates of photon spheres can be relaxed
Physical review. D/Physical review. D.·2024· 9 citedOpen Access
Even-parity stability of hairy black holes in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> gauge-invariant scalar-vector-tensor theories
Physical review. D/Physical review. D.·2024· 2 cited
Hairy black holes in extended Einstein-Maxwell-scalar theories with magnetic charge and kinetic couplings
Physical review. D/Physical review. D.·2024· 1 citedOpen Access
Even-parity stability of hairy black holes in $U(1)$ gauge-invariant scalar-vector-tensor theories
arXiv (Cornell University)·2024Open Access
Black hole perturbations in Maxwell-Horndeski theories
Physical review. D/Physical review. D.·2023· 23 cited
Cosmological gravity probes: Connecting recent theoretical developments to forthcoming observations
Progress of Theoretical and Experimental Physics·2023· 30 citedOpen Access
Black hole perturbations in Maxwell-Horndeski theories
arXiv (Cornell University)·2023Open Access
Cosmological gravity probes: connecting recent theoretical developments to forthcoming observations
arXiv (Cornell University)·2022· 2 citedOpen Access
Vainshtein screening in Horndeski theories nonminimally and kinetically coupled to ordinary matter
Physical review. D/Physical review. D.·2022Open Access
Relativistic star perturbations in Horndeski theories with a gauge-ready formulation
Physical review. D/Physical review. D.·2022· 31 citedOpen Access
Neutron star cooling in modified gravity theories
Progress of Theoretical and Experimental Physics·2021· 8 citedOpen Access
Stability of relativistic stars with scalar hairs
Physical review. D/Physical review. D.·2020· 20 citedOpen Access
Neutron stars with a generalized Proca hair and spontaneous vectorization
Physical review. D/Physical review. D.·2020· 44 citedOpen Access
Weak cosmic growth in coupled dark energy with a Lagrangian formulation
Physics Letters B·2020· 33 citedOpen Access
Neutron star cooling in modified gravity theories
arXiv (Cornell University)·2020· 3 citedOpen Access
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Frequent Co-authors

Shinji Tsujikawa(41), Lavinia Heisenberg(12), Antonio De Felice(11), Rampei Kimura(6), Masato Minamitsuji(5), Ying-li Zhang(3), Shintaro Nakamura(3), Shinji Mukohyama(2), Noemi Frusciante(2), L. Gergely(2), Katsuki Aoki(2), Y. Chinone(2), Daisuke Yamauchi(2), Shuichiro Yokoyama(2), Kazuyuki Akitsu(2), Takashi Hiramatsu(2), Taishi Katsuragawa(2), Toshiya Namikawa(2), Takahiro Nishimichi(2), Teppei Okumura(2)