2012 Fiscal Year Final Research Report
A study of radiation and flux variation mechanisms of active galactic nuclei using databases of multi-wavelength monitoring observations
| Project/Area Number |
22540247
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MINEZAKI Takeo 東京大学, 大学院・理学系研究科, 助教 (60292835)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAGUCHI Toshihiro 山口大学, 理工学研究科, 助教 (60433695)
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| Project Period (FY) |
2010 – 2012
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| Keywords | ブラックホール / クエーサー / 活動銀河核 / 変光 / 可視近赤外線 / ダスト |
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| Research Abstract |
We investigated inner structure of active galactic nuclei (AGNs) by using their flux variations, which is quite compact and unable to be resolved even by giant telescopes. We presented the radius-luminosity relation for the innermost dust torus that surrounds the black hole and the accretion disk in an AGN based on the largest light-curve dataset of optical and near-infrared monitoring observation. Then, we constructed a realistic model of light-curve reverberation for the dust torus, and compared the model with theobservations. We also investigated the spectral variation during flux variation of the UV-optical continuum emission, and proposed the possible emission- and flux-variation mechanisms of the central accretion disk.
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