AGN STORM 2. I. First results: A Change in the Weather of Mrk 817
文献类型:期刊论文
作者 | Kara,Erin54; Mehdipour,Missagh53; Kriss,Gerard A.53; Cackett,Edward M.52; Arav,Nahum51; Barth,Aaron J.50; Byun,Doyee51; Brotherton,Michael S.49; De Rosa,Gisella53; Gelbord,Jonathan48 |
刊名 | The Astrophysical Journal |
出版日期 | 2021-12 |
卷号 | 922期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac2159 |
产权排序 | 第15完成单位 |
文献子类 | Article |
英文摘要 | Abstract We present the first results from the ongoing, intensive, multiwavelength monitoring program of the luminous Seyfert 1 galaxy Mrk 817. While this active galactic nucleus was, in part, selected for its historically unobscured nature, we discovered that the X-ray spectrum is highly absorbed, and there are new blueshifted, broad, and narrow UV absorption lines, which suggest that a dust-free, ionized obscurer located at the inner broad-line region partially covers the central source. Despite the obscuration, we measure UV and optical continuum reverberation lags consistent with a centrally illuminated Shakura–Sunyaev thin accretion disk, and measure reverberation lags associated with the optical broad-line region, as expected. However, in the first 55 days of the campaign, when the obscuration was becoming most extreme, we observe a de-coupling of the UV continuum and the UV broad emission-line variability. The correlation recovered in the next 42 days of the campaign, as Mrk 817 entered a less obscured state. The short C iv and Lyα lags suggest that the accretion disk extends beyond the UV broad-line region. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | ACTIVE GALACTIC NUCLEIBROAD-LINE REGIONSUPERMASSIVE BLACK-HOLESX-RAY REVERBERATIONDRIVEN DISK WINDSSPACE TELESCOPEACCRETION-DISKEMISSION-LINESNGC 5548LIGHT CURVES |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000722730500001 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24746] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Kara,Erin |
作者单位 | 1.Eureka Scientific Inc., 2452 Delmer St. Suite 100, Oakland, CA 94602, USA 2.NRC Herzberg Astronomy and Astrophysics Research Centre, 5071 West Saanich Road, Victoria, BC, V9E 2E7, Canada 3.Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China 4.National Astronomical Observatories of China, 20A Datun Road, Beijing 100020, People's Republic of China 5.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, People's Republic of China 6.DARK, The Niels Bohr Institute, University of Copenhagen, Jagtvej 128, DK-2200 Copenhagen, Denmark 7.Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA 8.Departamento de Astronomia—IF, Universidade Federal do Rio Grande do Sul, CP 150501, 91501-970 Porto Alegre, RS, Brazil 9.Department of Physics & Astronomy, University of Nevada, Las Vegas 4505 S. Maryland Parkway, Las Vegas, NV, 89154-4002, USA 10.Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia |
推荐引用方式 GB/T 7714 | Kara,Erin,Mehdipour,Missagh,Kriss,Gerard A.,et al. AGN STORM 2. I. First results: A Change in the Weather of Mrk 817[J]. The Astrophysical Journal,2021,922(2). |
APA | Kara,Erin.,Mehdipour,Missagh.,Kriss,Gerard A..,Cackett,Edward M..,Arav,Nahum.,...&Zu,Ying.(2021).AGN STORM 2. I. First results: A Change in the Weather of Mrk 817.The Astrophysical Journal,922(2). |
MLA | Kara,Erin,et al."AGN STORM 2. I. First results: A Change in the Weather of Mrk 817".The Astrophysical Journal 922.2(2021). |
入库方式: OAI收割
来源:云南天文台
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