@inproceedings{oai:jaxa.repo.nii.ac.jp:00005266,
 author = {加藤, 成晃 and Kato, Yoshiaki},
 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 our study of oscillations and emissions in three-dimensional (3-D) magnetohydrodynamic (MHO) accretion flows around black holes. It is found that a pair of persistent quasi-periodic oscillations (twin QPOs) is excited at the resonant radius, where the ratio of Keplerian frequency to epicyclic frequency is close to 2:1. The power spectrum density (PSD) shows that the lower peak frequency corresponds to the Keplerian frequency, while the upper peak frequency corresponds to the sum of Keplerian frequency and epicyclic frequency. The results provide the first direct evidence for the excitation of resonant disk oscillation in MHD accretion flows. It is also found that the emergent spectra from radio to gamma-ray of the MHD accretion flows fluctuates in the wide range of frequency and does not always vary coherently., 資料番号: AA0064306027, レポート番号: JAXA-SP-08-014E},
 pages = {132--134},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {Quasi-periodic osicllations and variable emissions In magnetohydrodynamic accretion flows},
 volume = {JAXA-SP-08-014E},
 year = {2009}
}