X-ray properties of the quasar He 0450-2958
文献类型：期刊论文
| 作者 | Zhou XL(周新霖); Yang F(杨芳); Lv XR(吕晓蓉); Wang JM(王建民) ; Zhou, XL; Yang, F; Lu, XR; Wang, JM
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2007 |
| 卷号 | 133期号:2页码:432-438 |
| 关键词 | galaxies : active galaxies : individual (HE 0450-2958) infrared : galaxies X-rays : galaxies |
| 通讯作者 | Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing, Peoples R China ; Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 英文摘要 | We present an XMM-Newton EPIC observation of HE 0450-2958, which may be a "naked" quasar as suggested by Magain and coworkers. The XMM-Newton EPIC spectra show a substantial soft X-ray excess and a steep photon index, as well as marginal evidence for a weak Fe K alpha line. The X-ray absorption is consistent with the Galactic level. The 0.3-10 keV EPIC spectra can be fitted by a power-law plus blackbody model; however, the fit by a relativistically blurred photoionized disk reflection model is better. We estimate a black hole mass of 2(-1.3)(+7) x 10(7) M-circle dot from the X-ray variability. This broadly agrees with the value derived from the optical H beta line width. These results support a high-state Seyfert galaxy as the source. HE 0450-2958 shares properties with transitionary objects from ultraluminous infrared galaxies to quasars. We suggest that HE 0450-2958 is just in the beginning of an optical quasar window. |
| 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:000243730000008 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237461]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_核技术应用研究中心 |
| 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 | Zhou XL,Yang F,Lv XR,et al. X-ray properties of the quasar He 0450-2958[J]. ASTRONOMICAL JOURNAL,2007,133(2):432-438. |
| APA | 周新霖.,杨芳.,吕晓蓉.,王建民.,Zhou, XL.,...&Wang, JM.(2007).X-ray properties of the quasar He 0450-2958.ASTRONOMICAL JOURNAL,133(2),432-438. |
| MLA | 周新霖,et al."X-ray properties of the quasar He 0450-2958".ASTRONOMICAL JOURNAL 133.2(2007):432-438. |
入库方式： OAI收割
来源：高能物理研究所
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