# Shigenobu Hirose

Scientist
Japan Agency for Marine-Earth Science and Technology
Center for Mathematical Science and Advanced Technology

3173-25, Showa-machi, Kanazawa-ku, Yokohama-city, Kanagawa, 236-0001, Japan
shirose

## Short CV

### Employment

 1994.4 - 2003.3 Assistant, Department of Physics, Science University of Tokyo 2003.3 - 2005.5 Assistant Research Scientist, Department of Physics and Astronomy, Johns Hopkins University 2005.5 - 2009.3 Scientist, Earth Simulator Center, JAMSTEC 2009.4 - 2014.3 Scientist, Institute for Research on Earth Evolution, JAMSTEC 2014.3 - Scientist, Department of Mathematical Science and Advanced Technology, JAMSTEC

### Education

 1988.4 - 1990.3 Master's Program in Astronomy, University of Tokyo 1990.4 - 1994.3 Doctoral Program in Astronomy, University of Tokyo

### Referee Services

• The Astrophysical Journal
• Monthly Notices of the Royal Astronomical Society

## Research Topics

Thermal Equilibrium Curves of Accretion Disks
Accretion disks are differentially rotating disks orbiting around a gravitational object. The energy flux $F = \sigma_\text{B}T_\text{eff}^4$ that emerges from gas of surface density $\Sigma$ at a radius $r$ (angular velocity $\Omega(r)$) is determined by local thermal and hydrostatic equilibria. The relation $F=F(\Sigma;\Omega)$, called a thermal equlibrium curve, is a fundamental relation of accretion disks, showing not only a local thermodynamical structure, but also a transport coefficient that controls global evolution of a disk. We are calculating this thermal equlibirum curves for various types of accretion disks from first principles, using 3D radiation MHD simulation.