5 papers
QSO Formation under Coevolution of SMBH and Bulge
Nozomu Kawakatu, Masayuki Umemura, Masao Mori
he formation and growth of supermassive black holes (SMBHs) physically linked with bulges are considered. We focus on the radiation hydrodynamic process for the growth of SMBH in t…
The Growth of Supermassive Black Holes and QSO Formation
Masayuki Umemura
A novel mechanism to build up a supermassive black hole (SMBH) is proposed. Here, relativistic radiation-hydrodynamic processes are considered from a galactic scale to a horizon sc…
Cosmic Reionization and Galaxy Formation
M. Umemura, T. Nakamoto, H. Susa
Using 3D radiative transfer calculations on the reionization of an inhomogeneous universe, QSO absorption line systems are simulated and they are compared with observations of Ly$α…
Reionization of an Inhomogeneous Universe
M. Umemura, T. Nakamoto, H. Susa
Full radiative transfer in 3D space has been solved to pursue the reionization history in an inhomogeneous universe. It has been shown that the reionization of an inhomogeneous uni…
Microlens Diagnostics of Accretion Disks in Active Galactic Nuclei
A. Yonehara, S. Mineshige, J. Fukue +2
The optical-ultraviolet continuum from active galactic nuclei (AGN) seem to originate from optically thick and/or thin disks, and occasionally from associated circumnuclear starbur…