Radiatively inefficient accretion flow in the nucleus of NGC 1097
文献类型：期刊论文
| 作者 | Nemmen, RS; Storchi-Bergmann, T; Yuan, F ; Eracleous, M; Terashima, Y; Wilson, AS
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2006-06-01 |
| 卷号 | 643期号:2页码:652-659 |
| 关键词 | accretion black hole physics galaxies : active galaxies : individual (NGC 1097) galaxies : nuclei accretion disks |
| 英文摘要 | We present a model for the accretion flow around the supermassive black hole in the LINER nucleus of NGC 1097 that fits the optical to X-ray spectral energy distribution (SED). The X-ray segment of the SED is based on observations with the Chandra X-Ray Observatory, which are reported here for the first time. The inner part of the flow is modeled as a radiatively inefficient accretion flow (RIAF), and the outer part as a standard thin disk. The value of the transition radius (r(tr) approximate to 225R(S), where R-S = 2GM/c(2)) between the RIAF and the outer thin disk was obtained from our previous fitting of the double-peaked Balmer emission line profile, which originates in the thin disk. The black hole mass was inferred from measurements of the stellar velocity dispersion in the host galaxy. When these parameters are used in the accretion flow model, the SED can be successfully reproduced, which shows that the line profile model and the accretion flow model are consistent with each other. A small remaining excess in the near-UV is accounted for by the contribution of an obscured starburst located within 9 pc from the nucleus, as we reported in an earlier paper. The radio flux is consistent with synchrotron emission of a relativistic jet modeled by means of the internal shock scenario. In an appendix we also analyze the Chandra X-ray observations of the similar to 1 kpc circumnuclear star-forming ring and of an ultraluminous compact X-ray source located outside the ring. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; ADVECTION-DOMINATED ACCRETION ; PEAKED EMISSION-LINES ; BLACK-HOLE ACCRETION ; ENERGY-DISTRIBUTIONS ; SEYFERT-GALAXIES ; RADIO-EMISSION ; SAGITTARIUS-A ; DISK ; NGC-4258 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000238338700006 |
| 源URL | [http://119.78.226.72/handle/331011/19406]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Fed Rio Grande Sul, Inst Fis, Porto Alegre, RS, Brazil 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA 4.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Dept High Energy Astrophys, Kanagawa 2298510, Japan 5.Univ Maryland, Dept Astron, College Pk, MD 20742 USA |
| 推荐引用方式 GB/T 7714 | Nemmen, RS,Storchi-Bergmann, T,Yuan, F,et al. Radiatively inefficient accretion flow in the nucleus of NGC 1097[J]. ASTROPHYSICAL JOURNAL,2006,643(2):652-659. |
| APA | Nemmen, RS,Storchi-Bergmann, T,Yuan, F,Eracleous, M,Terashima, Y,&Wilson, AS.(2006).Radiatively inefficient accretion flow in the nucleus of NGC 1097.ASTROPHYSICAL JOURNAL,643(2),652-659. |
| MLA | Nemmen, RS,et al."Radiatively inefficient accretion flow in the nucleus of NGC 1097".ASTROPHYSICAL JOURNAL 643.2(2006):652-659. |
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来源：上海天文台
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