1.4k citations · 17k across the 291 of their papers we have counts for
293 papers
Dynamics of Binary System around Supermassive Black Hole
Kei-ichi Maeda, Priti Gupta, Hirotada Okawa
We discuss motion of a binary system around a supermassive black hole. Using Fermi-Walker transport, we construct a local inertial reference frame and set up a Newtonian binary sys…
One-Dimensional Numerical Study on Ignition of the Helium Envelope in Dynamical Accretion during the Double-Degenerate Merger
Kazuya Iwata, Keiichi Maeda
In order for a double-detonation model to be viable for normal type Ia supernovae, the adverse impact of helium-burning ash on early-time observables has to be avoided, which requi…
A Possible Solution to the Helium Anomaly of EMPRESS VIII by Cuscuton Gravity Theory
Kazunori Kohri, Kei-ichi Maeda
We discuss cosmology based on the cuscuton gravity theory to resolve the anomaly of the observational He abundance reported by the EMPRESS collaboration. We find that the gravi…
Cuscuta-Galileon cosmology: Dynamics, gravitational "constant"s and the Hubble Constant
Kei-ichi Maeda, Sirachak Panpanich
We discuss cosmology based on a Cuscuta-Galileon gravity theory, which preserves just two degrees of freedom. Although there exists no additional degrees of freedom, introduction o…
ECO-spotting: looking for extremely compact objects with bosonic fields
Vitor Cardoso, Caio F. B. Macedo, Kei-ichi Maeda +1
Black holes are thought to describe the geometry of massive, dark compact objects in the universe. To further support and quantify this long-held belief requires knowledge of possi…
Chemical stratification in a long gamma-ray burst cocoon and early-time spectral signatures of supernovae associated with gamma-ray bursts
Akihiro Suzuki, Keiichi Maeda
We present the results of 3D hydrodynamic simulations of gamma-ray burst (GRB) jet emanating from a massive star with a particular focus on the formation of high-velocity quasi-sph…