| Redshifts of Distant Blazars Limited by Fermi and VHE gamma-Ray Observations | |
Yang JP(杨建平)1,2,3 ; Wang JC(王建成)1,2; Yang, JP (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 2010 | |
| 卷号 | 62期号:4页码:L23-L26 |
| DOI | 10.1093/pasj/62.4.L23 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | Diffuse Radiation Bl Lacertae Objects: Individual (Pg 1553+113 Gamma-rays: Observations 3c 66a Pks 1424+240) |
| 摘要 | Our goal is to limit the redshifts of three blazars, PG 1553+113, 3C 66A, and PKS 1424+240, through an investigation of their Fermi and VHE (very high energy) gamma-ray observations. We assume that the intrinsic spectra of PG 1553+113, 3C 66A, and PKS 1424+240 have no cutoff across the Fermi and VHE gamma-ray energy ranges. The intrinsic spectra of VHE gamma-rays are obtained through extrapolation of the Fermi spectra. Comparing the measured and intrinsic VHE spectra due to extragalactic background light (EBL) absorption, we give the redshift upper limits of three blazars, while assuming a specific EBL model. The redshift upper limits of PG 1553+113, 3C 66A, and PKS 1424+240 are 0.78, 0.58, and 1.19, respectively. Near to the TeV energy the optical depth of VHE gamma photons might be overestimated by the Franceschini EBL model (Franceschini et al. 2008, A&A, 487, 837), or the second emission component might be present in the VHE spectra and lead the intrinsic photon index to be harder than the Fermi ones. |
| 项目资助者 | National Natural Science Foundation of China [10673028, 10778702] ; National Basic Research Program of China [2009CB824800] ; Chinese Academy of Sciences [KJCX2-YW-T24] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6264 |
| URL | 查看原文 |
| 归档日期 | 2010-08-06 |
| WOS记录号 | WOS:000282485100009 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | BL LACERTAE OBJECTS ; EXTRAGALACTIC BACKGROUND LIGHT ; ACTIVE GALACTIC NUCLEI ; HIGH-ENERGY RADIATION ; GEV EMISSION ; PG 1553+113 ; OPTICAL SPECTROSCOPY ; LAC OBJECTS ; 3C 66A ; X-RAY |
| EI入藏号 | 20215211380724 |
| EI主题词 | Gamma rays |
| EI分类号 | 723.1.1 Computer Programming Languages - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5002 |
| 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 | Yang, JP (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.Yunnan Agricultural University, Kunming 650201, 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 | Yang JP,Wang JC,Yang, JP . Redshifts of Distant Blazars Limited by Fermi and VHE gamma-Ray Observations[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(4):L23-L26. |
| APA | Yang JP,Wang JC,&Yang, JP .(2010).Redshifts of Distant Blazars Limited by Fermi and VHE gamma-Ray Observations.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(4),L23-L26. |
| MLA | Yang JP,et al."Redshifts of Distant Blazars Limited by Fermi and VHE gamma-Ray Observations".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.4(2010):L23-L26. |
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| Redshifts of Distant（216KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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