68 citations · 748 across the 29 of their papers we have counts for
29 papers
Modeling stellar convective transport with plumes : II. Transport Properties of Locally and Non-locally driven Convection
Youhei Masada, Tomoya Takiwaki, Nobumitsu Yoko
We perform three-dimensional hydrodynamic simulations of two idealized regimes of stellar convection: a cooling-driven model (Model C) and an entropy-gradient-driven model (Model S…
Constraining the Cosmological Constant from Stellar Orbits Around Sgr A* Using Physics-Informed Neural Networks
Shinsei Eyama, Youhei Masada
We present a novel analytical framework employing Physics-Informed Neural Networks (PINNs) to constrain the cosmological constant through the analysis of stellar orbits around…
Turbulent processes and mean-field dynamo
Axel Brandenburg, Detlef Elstner, Youhei Masada +1
Mean-field dynamo theory has important applications in solar physics and galactic magnetism. We discuss some of the many turbulence effects relevant to the generation of large-scal…
Rotational Dependence of Large-scale Dynamo in Strongly-stratified Convection: What Causes It?
Youhei Masada, Takayoshi Sano
In a rigidly-rotating magnetohydrodynamic (MHD) system with convective turbulence, a large-scale dynamo, categorized as the -type, can be excited when the spin rate is large e…
Multi-Scale Deep Learning for Estimating Horizontal Velocity Fields on the Solar Surface
Ryohtaroh T. Ishikawa, Motoki Nakata, Yukio Katsukawa +2
The dynamics in the photosphere is governed by the multi-scale turbulent convection termed as granulation and supergranulation. It is important to derive 3-dimensional velocity vec…
Convection and Dynamo in Newly-born Neutron Stars
Youhei Masada, Tomoya Takiwaki, Kei Kotake
To study properties of magneto-hydrodynamic (MHD) convection and resultant dynamo activities in proto-neutron stars (PNSs), we construct a "PNS in a box" simulation model with solv…