| Distinguishing RBL-like objects and XBL-like objects with the peak emission frequency of the overall energy spectrum | |
Tan YP(覃一平)1,2,3 ; Xie GZ(谢光中)1,3; Zheng, XT4; Qin, YP
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| 发表期刊 | ASTROPHYSICS AND SPACE SCIENCE
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| 1999 | |
| 卷号 | 266期号:4页码:549-555 |
| DOI | 10.1023/A:1002026504603 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 摘要 | We investigate quantitatively how the peak emission frequency of the overall energy spectrum is at work in distinguishing RBL-like and XBL-like objects. We employ the sample of Giommi et al. (1995) to study the distribution of BL Lacertae objects with various locations of the cutoff of the overall energy spectrum. We find that the sources with the cutoff located at lower frequency are indeed sited in the RBL region of the alpha(ro) - alpha(ox), plane, while those with the cutoff located at higher frequency are distributed in the XBL region. For a more quantitative study, we employ the BL Lacertae samples presented by Sambruna et al. (1996), where the peak emission frequency, v(p), of each source is estimated by lilting the data with a parabolic function. In the plot of alpha(rx) - log v(p) we find that, in the four different regions divided by the alpha(rx) = 0.75 line and the log v(p) = 14.7 line, all the RBL-like objects are inside the upper left region, while most XBL-like objects are within the lower right region. A few sources are located in the lower left region. No sources are in the upper right legion. This result is rather quantitative. It provides an evidence supporting what Giommi er al. (1995) suggested: RBL-like and XBL-like objects carl be distinguished by the difference of the peak emission frequency of the overall energy spectrum. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-640X |
| URL | 查看原文 |
| WOS记录号 | WOS:000087108800008 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | BL-LACERTAE OBJECTS ; ACTIVE GALACTIC NUCLEI ; DISTRIBUTIONS ; VARIABILITY ; BLAZARS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/6862 |
| 专题 | 星系研究组 |
| 通讯作者 | Qin, YP |
| 作者单位 | 1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan, 650011, P. R. China 2.Department of Geophysics, Peking University, Chinese Academy of Science-Peking University joint BeijingAstrophysical Center, Beijing, 100871, P. R. China 3.Department of Physics, YunnanUniversity, Yunnan Astrophysics Center, Kunming, Yunnan, 650091, P. R. China 4.Department of Physics, Nanjing University of Science andTechnology, Nanjing, Jiangsu, 210014, P. R. 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 | Tan YP,Xie GZ,Zheng, XT,et al. Distinguishing RBL-like objects and XBL-like objects with the peak emission frequency of the overall energy spectrum[J]. ASTROPHYSICS AND SPACE SCIENCE,1999,266(4):549-555. |
| APA | Tan YP,Xie GZ,Zheng, XT,&Qin, YP.(1999).Distinguishing RBL-like objects and XBL-like objects with the peak emission frequency of the overall energy spectrum.ASTROPHYSICS AND SPACE SCIENCE,266(4),549-555. |
| MLA | Tan YP,et al."Distinguishing RBL-like objects and XBL-like objects with the peak emission frequency of the overall energy spectrum".ASTROPHYSICS AND SPACE SCIENCE 266.4(1999):549-555. |
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| Distinguishing RBL-l（59KB） | 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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