Emergent spectra from slim accretion disks in active galactic nuclei
文献类型：期刊论文
| 作者 | Wang JM(王建民) ; Lu FJ(卢方军); Wang, JM; Szuszkiewicz, E; Lu, FJ
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 1999 |
| 卷号 | 522期号:2页码:839-845 |
| 关键词 | accretion, accretion disks galaxies : active galaxies : kinematics and dynamics |
| 通讯作者 | Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Lab Cosm Ray & High Energy Astrophys, Beijing 100039, Peoples R China ; Beijing Univ, Chinese Acad Sci, Joint Beijing Astrophys Ctr, Beijing 100871, Peoples R China ; Univ Leicester, Dept Phys, Astron Grp, Leicester LE1 7RH, Leics, England ; Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Peoples R China |
| 英文摘要 | Recently the vertical structure of accretion disks has received much attention because of the available comparison with observations of the big blue bump, but all the calculations are based on the standard accretion disk model. In this paper we calculate the vertical structure and the emergent spectrum based on the radial structure of slim disks from the height-averaged equations. With the a-prescription of energy generation, we obtain the density profile as a Gaussian distribution, then solve the energy transfer problem in the z-direction. We find that the sub-Keplerian rotation affects the density profile in the z-direction. The advection process plays significant roles in the emergent spectrum, especially for high accretion rates. We show that there are two prominent characteristics of the spectrum: the presence of a maximum frequency in the emergent spectrum, which is very weakly dependent on the accretion rate, and a flattened component. These results are beyond the scope of explanation of the standard model of accretion disks even for the model with the modified blackbody spectrum. The present model is suitable for a wide range of disk parameters. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000082360200019 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/238581]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang JM,Lu FJ,Wang, JM,et al. Emergent spectra from slim accretion disks in active galactic nuclei[J]. ASTROPHYSICAL JOURNAL,1999,522(2):839-845. |
| APA | 王建民,卢方军,Wang, JM,Szuszkiewicz, E,&Lu, FJ.(1999).Emergent spectra from slim accretion disks in active galactic nuclei.ASTROPHYSICAL JOURNAL,522(2),839-845. |
| MLA | 王建民,et al."Emergent spectra from slim accretion disks in active galactic nuclei".ASTROPHYSICAL JOURNAL 522.2(1999):839-845. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。