109 citations
- University of TsukubaJP13 papers
- National Astronomical Observatory of JapanJP9 papers
- The University of TokyoJP8 papers
- Hiroshima UniversityJP7 papers
- Kyoto UniversityJP6 papers
- Tokai UniversityJP4 papers
- Chinese Academy of SciencesCN3 papers
- Fukuoka UniversityJP3 papers
- Harvard UniversityUS3 papers
- Massachusetts Institute of TechnologyUS3 papers
- Nagoya UniversityJP3 papers
- National Astronomical ObservatoriesCN3 papers
5 papers · 1 filter
Stable equivalence of bridge positions of a handlebody-knot
Makoto Ozawa
We show that any two bridge positions of a handlebody-knot are stably equivalent.
Radiation Magnetohydrodynamic Simulations of Sub-Eddington accretion Flows in AGN: Origin of Soft X-ray Excess and Rapid Time Variabilities
Taichi Igarashi, Yoshiaki Kato, Hiroyuki R. Takahashi +3
We investigate the origin of the soft X-ray excess component in Seyfert galaxies observed when their luminosity exceeds 0.1% of the Eddington luminosity (). The e…
Two-dimensional numerical study for magnetic field dependence of neutrino-driven core-collapse supernova models
Jin Matsumoto, Tomoya Takiwaki, Kei Kotake +2
We study the effects of the magnetic field on the dynamics of non-rotating stellar cores by performing two-dimensional (2D), magnetohydrodynamics (MHD) simulations. To this end, we…
Multibranched surfaces in 3-manifolds
Makoto Ozawa
This is a latest survey article on embeddings of multibranched surfaces into 3-manifolds.
The maximum and minimum genus of a multibranched surface
Mario Eudave-Munoz, Makoto Ozawa
In this paper, we give a lower bound for the maximum and minimum genus of a multibranched surface by the first Betti number and the minimum and maximum genus of the boundary of the…