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CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS
Zhang, J; Xue, ZW; He JJ(贺健健); Zhang SN(张双南); He, JJ; Liang, EW; Zhang, SN
2015
发表期刊ASTROPHYSICAL JOURNAL
卷号807期号:1页码:51
文章类型Article
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.
关键词accretion, accretion disks BL Lacertae objects: general galaxies: jets galaxies: Seyfert quasars: general
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/807/1/51
收录类别SCI
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000358945200051
引用统计
被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228573
专题粒子天体物理中心
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Zhang, J,Xue, ZW,He JJ,et al. CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS[J]. ASTROPHYSICAL JOURNAL,2015,807(1):51.
APA Zhang, J.,Xue, ZW.,贺健健.,张双南.,He, JJ.,...&Zhang, SN.(2015).CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS.ASTROPHYSICAL JOURNAL,807(1),51.
MLA Zhang, J,et al."CORRELATIONS AMONG THE JET, ACCRETION DISK, AND BROAD-LINE REGION OF FLAT SPECTRUM RADIO QUASARS".ASTROPHYSICAL JOURNAL 807.1(2015):51.
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