High-energy properties of PKS 1830-211
文献类型：期刊论文
| 作者 | Zhang S(张澍) ; Chen YP(陈玉鹏); Li TB(李惕碚); Wang JM(王建民); Zhang, S; Chen, YP; Collmar, W; Foschini, L; Li, TP; Torres, DF
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2008 |
| 卷号 | 683期号:1页码:400-408 |
| 关键词 | X-rays : individual |
| 通讯作者 | [Zhang, Shu ; Chen, Yu-Peng ; Li, Ti-Pei ; Wang, Jian-Min] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Collmar, Werner] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany ; [Foschini, Luigi] INAF, Ist Astrofis Spaziale & Fis Cosm, Sez Bologna, I-40129 Bologna, Italy ; [Li, Ti-Pei] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; [Torres, Diego F.] Inst Catalana Rec & Estudis Avancats, E-08193 Barcelona, Spain ; [Torres, Diego F.] IEEC CSIC, Inst Ciencies Espai, E-08193 Barcelona, Spain ; [Wang, Jian-Min] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100864, Peoples R China |
| 英文摘要 | We report an analysis of X-ray and gamma-ray observations of PKS 1830-211, based on long-term campaigns carried out by INTEGRAL and COMPTEL. The INTEGRAL data currently available provide a 33 sigma significance detection in the 20-100 keV band, while the COMPTEL 6 yr data provide a 5.2 sigma significance detection in the 1-3 MeV energy band. In hard X-rays, INTEGRAL and supplementary Swift observations show flux variability on timescales of months. In gamma-rays, the source shows persistent emission over years. The hard X-ray spectrum is well represented by a power-law model, with Gamma similar to 1.3 in the 20-250 keV band. This photon index is consistent with a previous report of Gamma similar to 1.3 obtained at E > 3.5 keV from XMM-Newton data fitted with a broken power law model. The joint XMM-Newton and INTEGRAL spectrum presented here is thus fitted with a broken power law model; the parameters are refined as compared with the previous fit. The results show that the photon index changes from similar to 1.0 to similar to 1.3 at a break energy of similar to 4 keV. At MeV energies, the spectrum softens to Gamma similar to 2.2. These results, together with an EGRET measurement at E >= 100 MeV, constitute a broadband spectrum containing the peak of the power output at MeV energies, similar to most high-luminosity gamma-ray blazars. The measured spectral characteristics are discussed in the framework of gravitational lensing effects. |
| 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:000258296100034 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237327]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_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 | Zhang S,Chen YP,Li TB,et al. High-energy properties of PKS 1830-211[J]. ASTROPHYSICAL JOURNAL,2008,683(1):400-408. |
| APA | 张澍.,陈玉鹏.,李惕碚.,王建民.,Zhang, S.,...&Wang, JM.(2008).High-energy properties of PKS 1830-211.ASTROPHYSICAL JOURNAL,683(1),400-408. |
| MLA | 张澍,et al."High-energy properties of PKS 1830-211".ASTROPHYSICAL JOURNAL 683.1(2008):400-408. |
入库方式： OAI收割
来源：高能物理研究所
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