CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS
文献类型：期刊论文
| 作者 | Kang, Shi-Ju1; Chen, Liang2 ; Wu, Qingwen1
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| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 215期号:1页码:5(16pp) |
| 关键词 | BL Lacertae objects: general galaxies: jets plasmas quasars: general radiation mechanisms: non-thermal |
| 通讯作者 | 陈亮 |
| 英文摘要 | We fit (quasi-)simultaneous multi-waveband spectral energy distributions for a sample of low-synchrotron-peaked (LSP) blazars with a one-zone leptonic model. The seed photons that predominantly come from the broad line region (BLR) and infrared (IR) molecular torus are considered in the context of an external Compton process. We find that modeling with IR seed photons is systematically better than that with BLR photons based on a chi(2) test, which suggests that gamma-ray-emitting regions are most likely found outside the BLR. The minimum electron Lorentz factor, gamma(min), is constrained from the modeling of these LSP blazars with good soft X-ray data (ranging from 5 to 160 with a median value of 55), which plays a key role in jet power estimation. Assuming a one-to-one ratio of protons to electrons, we find that the jet power for LSP blazars is systematically higher than that of FR II radio galaxies at a 151 MHz radio luminosity, L-151MHz even though FR IIs are regarded as the same as LSP blazars in a unification scheme except at the jet viewing angle. A possible reason for this is that there are some e(+/-) pairs in the jets of these blazars. If this is the case, we find that the number density of e(+/-) pairs should be several times higher than that of e(-)-p pairs by assuming the jet power is the same for LSP blazars and FR IIs at the given L-151MHz. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; GAMMA-RAY EMISSION ; BL-LACERTAE OBJECTS ; ADVECTION-DOMINATED ACCRETION ; QUASAR PKS 1510-089 ; INVERSE-COMPTON EMISSION ; HIGH-ENERGY EMISSION ; BROAD-LINE REGION ; BLACK-HOLES ; MULTIWAVELENGTH OBSERVATIONS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344141800005 |
| 公开日期 | 2015-02-14 |
| 源URL | [http://119.78.226.72//handle/331011/15726]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Shi-Ju,Chen, Liang,Wu, Qingwen. CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2014,215(1):5(16pp). |
| APA | Kang, Shi-Ju,Chen, Liang,&Wu, Qingwen.(2014).CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,215(1),5(16pp). |
| MLA | Kang, Shi-Ju,et al."CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 215.1(2014):5(16pp). |
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来源：上海天文台
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