@article{oai:kumadai.repo.nii.ac.jp:00024557,
 author = {Itoh, Hitoshi and Baba, Tamon and 馬場, 多聞 and Kai, Takashi and Hirakawa, Masahiro and Arai, Kenzo and 荒井, 賢三},
 issue = {2},
 journal = {Physics Reports of Kumamoto University},
 month = {},
 note = {We investigate evolution of the warped disk induced by torque due to radiation pressure from the central object. The warp is treated as a small perturbation on to a standard disk model around a supermassive black hole. We derive simultaneous differential equations which govern the development of the warp. Applying our procedure to NGC 4258, we specify the mass of the black hole M=3.9x10^7 M_sun, the accretion rate  M=8.6x10^-4 M_sun yr^-1 and the luminosity L=1.0x10^44 erg s^-1. The initial small tilt angle of the disk grows by a factor of 54 during 10 Gyr. It is found that the resulting warped disk can be well superposed on the observed map of water maser emitting clouds.},
 pages = {183--190},
 title = {On the Warped Disk in NGC 4258},
 volume = {13},
 year = {2010},
 yomi = {ババ, タモン and アライ, ケンゾウ}
}