YNAO OpenIR  > 高能天体物理研究组
X-RAY OBSERVATIONAL SIGNATURE OF A BLACK HOLE ACCRETION DISK IN AN ACTIVE GALACTIC NUCLEUS RX J1633+4718
Yuan WM(袁为民)1,2,3; Liu, BF1,3; Zhou, H4; Wang, TG4; Yuan, W (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2010-11-01
卷号723期号:1页码:508-513
DOI10.1088/0004-637X/723/1/508
产权排序第2完成单位
收录类别SCI
关键词Galaxies: Active Accretion Galaxies: Individual (Rx j1633+4718) Accretion Disks Galaxies: Jets Galaxies: Seyfert X-rays: Galaxies
摘要We report the discovery of a luminous ultra-soft X-ray excess in a radio-loud narrow-line Seyfert 1 galaxy, RX J1633+4718, from archival ROSAT observations. The thermal temperature of this emission, when fitted with a blackbody, is as low as 32.5(-6.0)(+8.0) eV. This is in remarkable contrast to the canonical temperatures of similar to 0.1-0.2 keV found hitherto for the soft X-ray excess in active galactic nuclei (AGNs) and is interestingly close to the maximum temperature predicted for a postulated accretion disk in this object. If this emission is indeed blackbody in nature, the derived luminosity (3.5(-1.5)(+3.3) x 10(44) erg s(-1)) infers a compact emitting area with a size (similar to 5 x 10(12) cm or 0.33 AU in radius) that is comparable to several times the Schwarzschild radius of a black hole (BH) at the mass estimated for this AGN (similar to 3 x 10(6) M(circle dot)). In fact, this ultra-steep X-ray emission can be well fitted as the (Compton scattered) Wien tail of the multi-temperature blackbody emission from an optically thick accretion disk, whose inferred parameters (BH mass and accretion rate) are in good agreement with independent estimates using the optical emission-line spectrum. We thus consider this feature as a signature of the long-sought X-ray radiation directly from a disk around a supermassive BH, presenting observational evidence for a BH accretion disk in the AGN. Future observations with better data quality, together with improved independent measurements of the BH mass, may constrain the spin of the BH.
项目资助者NSFC [10533050, 11033007, 10773028] ; National Basic Research Program [2009CB824800]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000284090100043
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LINE SEYFERT-1 GALAXIES ; ALL-SKY SURVEY ; EMISSION-LINE ; SOFT EXCESS ; QUASARS ; SPECTRA ; ROSAT ; MASS ; AGN ; REFLECTION
引用统计
被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/4993
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Yuan, W (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
作者单位1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan, P.O. BOX 110, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China
4.Key Laboratory for Research in Galaxies and Cosmology, Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui, China
第一作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Yuan WM,Liu, BF,Zhou, H,et al. X-RAY OBSERVATIONAL SIGNATURE OF A BLACK HOLE ACCRETION DISK IN AN ACTIVE GALACTIC NUCLEUS RX J1633+4718[J]. ASTROPHYSICAL JOURNAL,2010,723(1):508-513.
APA Yuan WM,Liu, BF,Zhou, H,Wang, TG,&Yuan, W .(2010).X-RAY OBSERVATIONAL SIGNATURE OF A BLACK HOLE ACCRETION DISK IN AN ACTIVE GALACTIC NUCLEUS RX J1633+4718.ASTROPHYSICAL JOURNAL,723(1),508-513.
MLA Yuan WM,et al."X-RAY OBSERVATIONAL SIGNATURE OF A BLACK HOLE ACCRETION DISK IN AN ACTIVE GALACTIC NUCLEUS RX J1633+4718".ASTROPHYSICAL JOURNAL 723.1(2010):508-513.
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
X-RAY OBSERVATIONAL (399KB)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
[Yuan WM(袁为民)]的文章
[Liu, BF]的文章
[Zhou, H]的文章
百度学术
百度学术中相似的文章
[Yuan WM(袁为民)]的文章
[Liu, BF]的文章
[Zhou, H]的文章
必应学术
必应学术中相似的文章
[Yuan WM(袁为民)]的文章
[Liu, BF]的文章
[Zhou, H]的文章
相关权益政策
暂无数据
收藏/分享
文件名: X-RAY OBSERVATIONAL SIGNATURE OF A BLACK HOLE ACCRETION DISK IN AN ACTIVE GALACTIC NUCLEUS RX J1633+4718.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。