CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS

	CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS
	Zhang, Jin1,2 ; Xue, Zi-Wei 1,5; He, Jian-Jian 4,5; Liang, En-Wei 1,2,3; Zhang, Shuang-Nan 1,4,6
刊名	ASTROPHYSICAL JOURNAL
	2015-07-01
卷号	807 期号:1
关键词	accretion, accretion disks BL Lacertae objects: general galaxies: jets galaxies: Seyfert quasars: general
英文摘要	On the basis of the spectral energy distribution fits and emission line fluxes of 18 GeV flat spectrum radio quasars (FSRQs), we calculate their jet power (P-jet), disk luminosity (L-disk), and broad-line region luminosity (L-BLR). No correlation between P-jet with either L-disk or L-BLR is found, but L-BLR is strongly correlated with L-disk. On average, the broad-line region (BLR) covering factors of GeV-FSRQs in our sample are smaller than those of large samples of quasars. P-jet of some GeV-FSRQs are higher than their L-disk, but all of them are lower than the accretion power of black holes (BHs), which is estimated by (M) over dotc(2) = L-disk/0.1, indicating that the total accretion power of BHs is sufficient to drive the jets in these sources; however,. lack of correlation between L-disk and P-jet of the GeV-FSRQs may suggest that their jets are launched by the Blandford-Znajek process via extracting the rotational energy of BHs. Using the L-BLR-L-disk relation of the GeV-FSRQs, we estimate L-disk of a BL Lac sample with their L-BLR. A comparison of L-BLR and the Eddington ratio (L-disk/L-Edd) among BL Lacs, very radio-loud NLS1 galaxies, and FSRQs is also presented. It is found that along with the BL Lac-NLS1-FSRQ sequence L-BLR and L-disk/L-Edd increase, which may correspond to the change of the accretion disk structure and the transformation of the dominant mechanism for jet launching. This is also consistent with the division of blazar parent populations, i.e., low/high-excitation radio galaxies.
收录类别	SCI
语种	英语
WOS记录号	WOS:000358945200051
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5636]
专题	国家天文台_空间科学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 2.Guangxi Univ, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 3.Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
推荐引用方式 GB/T 7714	Zhang, Jin,Xue, Zi-Wei,He, Jian-Jian,et al. CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS[J]. ASTROPHYSICAL JOURNAL,2015,807(1).
APA	Zhang, Jin,Xue, Zi-Wei,He, Jian-Jian,Liang, En-Wei,&Zhang, Shuang-Nan.(2015).CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS.ASTROPHYSICAL JOURNAL,807(1).
MLA	Zhang, Jin,et al."CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS".ASTROPHYSICAL JOURNAL 807.1(2015).