A possible signature of connection between blazars and seyfert galaxies
文献类型：期刊论文
| 作者 | Liang EW(梁恩维)1,2,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2003 |
| 卷号 | 55期号:5页码:947-951 |
| 关键词 | galaxies : active galaxies : BL lacs ualaxies : evolution galaxies : nuclei galaxies : seyfert |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Liang, EW (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | The accretion rates (M) and their correlation with cosmological redshifts for a sample of blazars and Seyfert glaxies are presented. The sample includes 77 blazars (28 FSRQs, 26 LBLs, and 23 HBLs) and 60 Seyfert galaxies, of which the extended spectral energy distribution information and redshifts are available. Within the framework of accreting black holes, the accretion rates for these sources were estimated based on their bolometric luminosities. The result shows that the accretion rates are significantly different for each subclass of the blazars and Seyfert galaxies. Their averages are, respectively, 50.2, 17.0, 1.0, 0.1 Mcircle dotyr(-1) for the FSRQs, LBLs, HBLs, and the Seyfert galaxies. exhibitin a well descending sequence of FSRQs-LBLs-HBLs-Seyfert galaxies. They are strongly correlated with the redshifts for both blazars and Seyfert galaxies. The linear correlation coefficients are 0.81 and 0.68 with a chance probability of p < 0.0001, respectively. A plot of M-z shows that the blazars and the Seyfert Galaxies distribute in a distinguishable regions with a connection at z similar to 0.7, and almost all the sources lie in a narrow region of z(1.40) less than or equal to M less than or equal to 250 z(1.40), illustrating a strong correlation between the two quantities for the whole sample. The regression line is M = (14.5 +/- 1.2)z(1.40 +/- 0.06) M-circle dot yr(-1) with a linear coefficient of 0.93 and a chance probability of p < 0.0001. These results confirm D'Elia and Cavaliere's argument and expand this argument to Seyfert galaxies, suggesting a connection between blazars and Seyfert galaxies. This connection might imply that the two classes are on the same evolutionary sequence. Although the Correlations of the data are formally solid, the conclusion may be affected by one source of considerable uncertainty at the data level, which is also discussed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SPECTRAL ENERGY-DISTRIBUTIONS ; ACTIVE GALACTIC NUCLEI ; RAY-LOUD BLAZARS ; BL-LACERTAE OBJECTS ; BLACK-HOLE MASSES ; DOPPLER FACTORS ; RADIO QUASARS ; ACCRETION ; MODEL ; QUIET |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/55/5/947 |
| 语种 | 英语 |
| WOS记录号 | WOS:000186281000009 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6966]  |
| 专题 | 云南天文台_星系研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, P. R. China 2.Physics Department, Guangxi University, Nanning 530004, P. R. China 3.Astronomy Department, Nanjing University, Nanjing 210093, P. R. China |
| 推荐引用方式 GB/T 7714 | Liang EW. A possible signature of connection between blazars and seyfert galaxies[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2003,55(5):947-951. |
| APA | Liang EW.(2003).A possible signature of connection between blazars and seyfert galaxies.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,55(5),947-951. |
| MLA | Liang EW."A possible signature of connection between blazars and seyfert galaxies".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 55.5(2003):947-951. |
入库方式： OAI收割
来源：云南天文台
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