@inproceedings{oai:jaxa.repo.nii.ac.jp:00005048,
 author = {川島, 朋尚 and 大須賀, 健 and 嶺重, 慎 and 高部, 英明 and 松元, 亮治 and Kawashima, Tomohisa and Ohsuga, Ken and Mineshige, Shin and Heinzeller, Dominikus and Takabe, Hideaki and Matsumoto, Ryoji},
 book = {宇宙航空研究開発機構特別資料:, JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H},
 month = {Feb},
 note = {The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan, Supercritical accretion flows inevitably produce radiation-pressure driven outflows, which will Compton up-scatter soft photons from the underlying accretion flow, thereby making hard emission. We performed two dimensional radiation hydrodynamic simulations of supercritical accretion flows and outflows, incorporating such Compton scattering effects, and demonstrate that there appears a new hard spectral state "Comptonizing outflow state" at higher photon luminosities than that of the slim-disk state. In this state, as the photon luminosity increases, the photon index decreases and the fraction of the hard emission increases. The Compton y-parameter is of the order of unity (and thus the photon index will be approximately 2) when the apparent photon luminosity is approximately 30L(sub　E) (with L(sub E) being the Eddington luminosity) for nearly face-on sources. This explains the fact that brighter ULXs possess harder X-ray spectra (Berghea et al. 2008). Furthermore, expected SED of the Comptonizing outflow state is consistent with that of the ultraluminous state, which consists of the disk and the cool, optically thick corona (Gladstone et al. 2009)., Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science, 資料番号: AA0064574116, レポート番号: JAXA-SP-09-008E},
 pages = {306--307},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {New Spectral State of Supercritical Accretion Flow with Comptonizing Outflow:  Application to Bright ULXs},
 volume = {JAXA-SP-09-008E},
 year = {2010}
}