@inproceedings{oai:jaxa.repo.nii.ac.jp:00005268,
 author = {町田, 真美 and 松元, 亮治 and Machida, Mami and Matsumoto, Ryoji},
 book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: Astrophysics with All-Sky X-Ray observations: 3rd International MAXI Workshop},
 month = {Feb},
 note = {Astrophysics with All-Sky X-Ray observations: 3rd International MAXI Workshop (RIKEN, 10-12 June 2008), We present the results of global three-dimensional magneto-hydrodynamic simulations of black hole accretion flows. We focus on the excitation mechanism of low frequency quasi-periodic oscillations observed during the state transition of black hole candidates. When a cool gas is supplied, a constant angular momentum inner torus is formed around 4 - 8 r(sub s) where r(sub s) is the Schwartzchild radius. This inner torus deforms itself from circle to crescent quasi-periodically. The origin of the torus defomation from circle to crescent is the Papaloizou & Pringle instability. The magnetic energy release by the magnetic reconnection is the reason why the trous deformed to the crescent shape returns to the circle shape. The time interval of these deformation is about 1 day when we assumed a 10(exp 7) solar mass black hole. In this presentation, we show the dependence of numerical results on the gas temperature supplied from the outer region., Physical characteristics: Original contains color illustrations, 資料番号: AA0064306029, レポート番号: JAXA-SP-08-014E},
 pages = {142--146},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {Magneto-hydrodynamic simulations of excitation of low-frequency QPOs in black hole candidates},
 volume = {JAXA-SP-08-014E},
 year = {2009}
}