论文标题
相对论的喷气二分法和大黄花序列的末端
The Relativistic Jet Dichotomy and the End of the Blazar Sequence
论文作者
论文摘要
随着喷气样品的大小增加，我们对喷射AGN统一的理解已经大大发展。在这里，基于有史以来最大的2000多个重采样射流光谱分布的样本，我们检查了同步加速器峰频率 - 峰值光度平面，几乎没有证据表明抗相关性被称为Blazar序列。取而代之的是，我们发现了有效的二分法的有力证据，即与有效或“ Quasar-Mode”积聚（强/II型喷气机）以及与效率低下的积聚（弱/I型射流）相关的二分法。 II型喷气机包括由高兴奋的射电星系托管的喷气机，扁平频谱无线电类星体（FSRQ）和大多数低频峰BL LAC对象。 I型喷气机包括那些由低兴奋的射电星系和大型托管托管的喷气机，其同步峰频率高于10^15 Hz（几乎所有BL LAC对象）。我们从低频无线电观察结果中得出了1000多个来源的总喷射功率的估计值，并发现喷气二分法与喷射功率的分裂不符。相反，在所有观察到的喷气功率下都会产生II型飞机，直至我们样本中的最低水平，而I型喷气机的范围从非常低到中等高的喷气功率，明显的上限为〜10^43 ERG/s，每个班级的喷射功率范围与预期的有效效率（即，从效率上（即<0.5％）匹配（即<0.5％），<<0.5％，<0.5％，<0.5％均与<0.5％的粉丝相匹配。 10^7-10^9.5 m_sol。
Our understanding of the unification of jetted AGN has evolved greatly as jet samples have increased in size. Here, based on the largest-ever sample of over 2000 well-sampled jet spectral energy distributions, we examine the synchrotron peak frequency -- peak luminosity plane, and find little evidence for the anti-correlation known as the blazar sequence. Instead, we find strong evidence for a dichotomy in jets, between those associated with efficient or `quasar-mode' accretion (strong/type II jets) and those associated with inefficient accretion (weak/type I jets). Type II jets include those hosted by high-excitation radio galaxies, flat-spectrum radio quasars (FSRQ), and most low-frequency-peaked BL Lac objects. Type I jets include those hosted by low-excitation radio galaxies and blazars with synchrotron peak frequency above 10^15 Hz (nearly all BL Lac objects). We have derived estimates of the total jet power for over 1000 of our sources from low-frequency radio observations, and find that the jet dichotomy does not correspond to a division in jet power. Rather, type II jets are produced at all observed jet powers, down to the lowest levels in our sample, while type I jets range from very low to moderately high jet powers, with a clear upper bound at ~10^43 erg/s The range of jet power in each class matches exactly what is expected for efficient (i.e., a few to 100% Eddington) or inefficient (<0.5% Eddington) accretion onto black holes ranging in mass from 10^7-10^9.5 M_sol.
