Structures around supermassive black holes and their evolution - feedback and feeding

超大质量黑洞周围的结构及其演化——反馈和供给

• 批准号: 23540267
• 负责人: WADA KEIICHI
• 金额: $ 3.24万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540267/
• 关键词: 銀河; 輻射流体力学; クェーサー; 巨大ブラックホール; 国際情報交流（ドイツ）; 国際情報交流（オランダ）

We have theoretically investigated structures and dynamics of the ISM around supermassive black holes in galaxies. Using three-dimensional radiation-hydrodynamics simulations, we confirmed that non-steady and non-uniform outflows are generated due to the radiation pressure and heating. This outflow does not prevent from accreting materials toward the galactic center. We also found that a part of failed outflows naturally form an obscuring torus, which has been postulated to explain observed properties of AGNs. The radiation-driven outflows are ubiquitous over a large dynamic range, for example, we found that strong line-driven winds are formed from the accretion disk, and this consistently explains broad-absorption line quasars.

理论上已经研究了星系中超级黑洞的ISM的结构和动力学。使用三维辐射流动力学模拟，我们确认由于辐射压力和加热而产生不稳态和不均匀的流出。此流出不会阻止向银河中心吸收材料。我们还发现，失败的一部分流出自然会形成一个遮盖的圆环，该圆环已被假定以解释观察到的AGN的特性。例如，在较大的动态范围内，辐射驱动的外流无处不在，我们发现从积聚磁盘中形成了强线驱动的风，这始终如一地解释了广泛吸收线的类星体。

项目成果

The Mass of the First Stars

第一批恒星的质量

• DOI: 10.1088/0004-637x/773/2/185
• 发表时间: 2013
• 期刊: The Astrophysical Journal
• 作者: Tazaki;F.;Ueda;Y. et al;Hajime Susa
• 通讯作者: Hajime Susa

Dynamical Picture of the ISM

ISM动态图

• 发表时间: 2013
• 作者: Sasaki;T.;Yao;Y.;Yoshida;M.; Ohshima;N.;Mikami;Y.;Okada;N.;Koyanao;H.;Nagayama;S.;Sekiguchi;K.; Ando;H.;Liu;L.;和田 桂一
• 通讯作者: 和田 桂一

RADIATION-DRIVEN FOUNTAIN AND ORIGIN OF TORUS AROUND ACTIVE GALACTIC NUCLEI

• DOI: 10.1088/0004-637x/758/1/66
• 发表时间: 2012-08
• 期刊: The Astrophysical Journal
• 作者: K. Wada

Origin of Multiple Nuclei in Ultraluminous Infrared Galaxies

超光红外星系中多核的起源

• DOI: 10.1088/0004-637x/746/1/26
• 发表时间: 2012
• 期刊: Astrophysical Journal
• 影响因子: 4.9
• 作者: H.Matsui;他7名、N.Yoshida
• 通讯作者: 他7名、N.Yoshida

DYNAMICS OF NON-STEADY SPIRAL ARMS IN DISK GALAXIES

• DOI: 10.1088/0004-637x/763/1/46
• 发表时间: 2012-11
• 期刊: The Astrophysical Journal
• 作者: J. Baba;T. Saitoh;K. Wada