XMM-Newton observations of the narrow-line Seyfert 1 galaxy Mrk 335 in a historical low X-ray flux state
文献类型：期刊论文
| 作者 | Grupe, Dirk1; Komossa, Stefanie2; Gallo, Luigi C.3; Fabian, Andrew C.4; Larsson, Josefin4; Pradhan, Anil K.5; Xu, Dawei6 ; Miniutti, Giovanni4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2008-07-10 |
| 卷号 | 681期号:2页码:982-997 |
| 关键词 | galaxies : active galaxies : individual (Mrk 335) galaxies : Seyfert ultraviolet : galaxies X-rays : galaxies |
| 英文摘要 | We report the discovery of strong soft X-ray emission lines and a hard continuum above 2 keV in the narrow-line Seyfert 1 galaxy Mrk 335 during an extremely low X-ray flux state. Mrk 335 was observed for 22 ks by XMM-Newton in 2007 July as a Target of Opportunity to examine it in its X-ray low flux state, which was discovered with Swift. Long-term light curves suggest that this is the lowest flux state this AGN has ever been seen in. However, Mrk 335 is still sufficiently bright that its X-ray properties can be studied in detail. The X-ray continuum spectrum is very complex and requires several components to model. Statistically, partial covering and blurred reflection models work well. We confirm the presence of a strong narrow Fe line at 6.4 keV. High-resolution spectroscopy with the XMM-Newton RGS reveals strong, soft X-ray emission lines not detected in previous, higher signal-to-noise ratio, XMM-Newton observations, such as highly ionized Fe lines, O VII, and Ne IX and Mg XI lines. The optical / UV fluxes are similar to those previously measured with Swift. Optical spectroscopy taken in 2007 September does not show any changes to optical spectra obtained 8 years earlier. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000257516000018 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7330]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA 2.Max Planck Inst Extraterr Phys, D-85748 Garching, Germany 3.St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada 4.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England 5.Ohio State Univ, Dept Astron, Columbus, OH 43210 USA 6.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Grupe, Dirk,Komossa, Stefanie,Gallo, Luigi C.,et al. XMM-Newton observations of the narrow-line Seyfert 1 galaxy Mrk 335 in a historical low X-ray flux state[J]. ASTROPHYSICAL JOURNAL,2008,681(2):982-997. |
| APA | Grupe, Dirk.,Komossa, Stefanie.,Gallo, Luigi C..,Fabian, Andrew C..,Larsson, Josefin.,...&Miniutti, Giovanni.(2008).XMM-Newton observations of the narrow-line Seyfert 1 galaxy Mrk 335 in a historical low X-ray flux state.ASTROPHYSICAL JOURNAL,681(2),982-997. |
| MLA | Grupe, Dirk,et al."XMM-Newton observations of the narrow-line Seyfert 1 galaxy Mrk 335 in a historical low X-ray flux state".ASTROPHYSICAL JOURNAL 681.2(2008):982-997. |
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来源：国家天文台
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