IHEP OpenIR  > 粒子天体物理中心
Collisions among clouds inside dusty tori in active galactic nuclei: Observational consequences
Wang JM(王建民); Wang, JM
2004
发表期刊ASTROPHYSICAL JOURNAL
卷号614期号:1页码:L21-L24
通讯作者Chinese Acad Sci, Inst High Energy Phys, High Energy Astrophys Lab, Beijing 100039, Peoples R China
摘要A geometrically thick dusty torus in NGC 1068 has been unambiguously resolved by an infrared interferometry telescope. This implies that clouds composing the dusty torus are undergoing supersonic collisions with each other. We show that the collisions form strong nonrelativistic shocks, which accelerate populations of relativistic electrons. The torus reprocesses emission from the accretion disk into an infrared band. We show that the energy density of the infrared photons inside the torus is much higher than that of the magnetic field in the clouds, and the seed photons of inverse Compton scattering are mainly from the infrared. The maximum energy of the relativistic electrons can reach a Lorentz factor of 10(5). We calculate the spectrum of the synchrotron and inverse Compton scattering radiation from the electrons in the torus. The relativistic electrons in the torus radiate non-thermal emission from radio to gamma-ray, which isotropically diffuses in the region of the torus. We find that the most prominent character is a peak at similar to0.5-1 GeV. We apply this model to NGC 1068 and find that the observed radio emission from the core component S-1 can be explained by the synchrotron emission from the relativistic electrons. We predict that there is gamma-ray emission with a luminosity of ergs 10(40) s(-1) peaking at similar to1 GeV from 40 10 the torus, which could be detected by the Gamma-Ray Large-Array Space Telescope in the future. This will provide a new clue to understanding the physics in the torus. The nonthermal radiation from the dusty torus may explain the radio emission from Seyfert galaxies. The cosmological implications of the nonthermal emission to the gamma-ray background radiation are also discussed.
文章类型Article
关键词galaxies : individual (NGC 1068) galaxies : nuclei
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
DOI10.1086/425318
URL查看原文
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000224367100006
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240261
专题粒子天体物理中心
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,Wang, JM. Collisions among clouds inside dusty tori in active galactic nuclei: Observational consequences[J]. ASTROPHYSICAL JOURNAL,2004,614(1):L21-L24.
APA 王建民,&Wang, JM.(2004).Collisions among clouds inside dusty tori in active galactic nuclei: Observational consequences.ASTROPHYSICAL JOURNAL,614(1),L21-L24.
MLA 王建民,et al."Collisions among clouds inside dusty tori in active galactic nuclei: Observational consequences".ASTROPHYSICAL JOURNAL 614.1(2004):L21-L24.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
7932.pdf(67KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[王建民]的文章
[Wang, JM]的文章
百度学术
百度学术中相似的文章
[王建民]的文章
[Wang, JM]的文章
必应学术
必应学术中相似的文章
[王建民]的文章
[Wang, JM]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 7932.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。