AWAKENING OF THE HIGH-REDSHIFT BLAZAR CGRaBS J0809+5341
文献类型：期刊论文
| 作者 | Paliya, Vaidehi S.1,2; Parker, M. L.3; Stalin, C. S.1; Fabian, A. C.3; Ramya, S.4; Covino, S.5; Tagliaferri, G.5; Sahayanathan, S.6; Ravikumar, C. D.2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015-04-20 |
| 卷号 | 803期号:2页码:1 |
| 关键词 | galaxies: active galaxies: jets gamma rays: galaxies quasars: individual (CGRaBS J0809+5341) |
| 英文摘要 | CGRaBS J0809+5341, a high-redshift blazar at z = 2.144, underwent a giant optical outburst on 2014 April 19 when it brightened by similar to 5 mag and reached an unfiltered apparent magnitude of 15.7 mag. This implies an absolute magnitude of -30.5 mag, making it one of the brightest quasars in the universe. This optical flaring triggered us to carry out observations during the decaying part of the flare covering a wide energy range using the Nuclear Spectroscopic Telescope Array, Swift, and ground-based optical facilities. For the first time, the source is detected in gamma-rays by the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope. A high optical polarization of similar to 10% is also observed. Using the Sloan Digital Sky Survey spectrum, the accretion disk luminosity and black hole mass are estimated as 1.5 x 10(45) erg s(-1) and 10(8.4) M-circle dot, respectively. Using a single zone leptonic emission model, we reproduce the spectral energy distribution of the source during the flaring activity. This analysis suggests that the emission region is probably located outside the broad-line region, and the jet becomes radiatively efficient. We also show that the overall properties of CGRaBS J0809+5341 seem to not be in agreement with the general properties observed in high-redshift blazars up to now. |
| 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 ; SPECTRUM RADIO QUASARS ; BL LACERTAE OBJECTS ; ALL-SKY SURVEY ; GAMMA-RAY ; FERMI BLAZARS ; X-RAY ; DATA RELEASE ; LAC OBJECTS ; RELATIVISTIC JETS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000353524500063 |
| 公开日期 | 2015-08-18 |
| 源URL | [http://119.78.226.72/handle/331011/18238]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Indian Inst Astrophys, Bangalore 560034, Karnataka, India 2.Univ Calicut, Dept Phys, Malappuram 673635, India 3.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England 4.Shanghai Astron Observ, Shanghai 200030, Peoples R China 5.INAF, Osservatorio Astronom Brera, I-23807 Merate, Italy 6.Bhabha Atom Res Ctr, Astrophys Sci Div, Mumbai 400085, Maharashtra, India |
| 推荐引用方式 GB/T 7714 | Paliya, Vaidehi S.,Parker, M. L.,Stalin, C. S.,et al. AWAKENING OF THE HIGH-REDSHIFT BLAZAR CGRaBS J0809+5341[J]. ASTROPHYSICAL JOURNAL,2015,803(2):1. |
| APA | Paliya, Vaidehi S..,Parker, M. L..,Stalin, C. S..,Fabian, A. C..,Ramya, S..,...&Ravikumar, C. D..(2015).AWAKENING OF THE HIGH-REDSHIFT BLAZAR CGRaBS J0809+5341.ASTROPHYSICAL JOURNAL,803(2),1. |
| MLA | Paliya, Vaidehi S.,et al."AWAKENING OF THE HIGH-REDSHIFT BLAZAR CGRaBS J0809+5341".ASTROPHYSICAL JOURNAL 803.2(2015):1. |
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来源：上海天文台
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