AI 中文总结
本研究基于大样本伽马射线喷流AGN，分析了喷流功率等物理参数，发现黑洞自旋无法区分辐射高效与低效喷流AGN，吸积盘磁场强度是关键区分因子，支持喷流由黑洞旋转能经吸积盘磁场驱动的情景。
AI 中文摘要
我们基于一个最大的伽马射线喷流活动星系核（AGN）样本，给出了强大喷流-吸积盘-黑洞系统的物理参数表，包含喷流动能功率与辐射功率、喷流辐射效率、整体洛伦兹因子、黑洞自旋、吸积盘磁场强度及康普顿主导度。对比 blazar 的喷流动能功率估计值，由光谱能量分布（SED）拟合得到的数值往往高于通过空腔功率及其他标度关系估算的结果。对于辐射高效 AGN，多数源被推断具有高自旋；对于辐射低效 AGN，许多可能具有高自旋，不过部分源或存在差异，这表明黑洞自旋无法有效区分辐射高效与低效的喷流 AGN。我们的结果指出吸积盘磁场强度是关键区分因子，提出辐射高效与低效类群的暂定分界值约为10^3.9高斯。在辐射高效 AGN中，喷流功率与整体洛伦兹因子和黑洞质量存在显著相关性；在窄吸积率区间内的辐射低效 AGN中，二者则呈现弱至中等程度的相关性。分析显示，喷流功率与吸积盘光度及磁场强度均相关。此外，爱丁顿比、康普顿主导度与喷流属性的关联符合喷流-吸积联系。最后，喷流辐射功率与整体洛伦兹因子或依赖于黑洞自旋。这些结果支持喷流由快速旋转黑洞通过吸积盘磁场提取能量来驱动和加速的情景。
英文摘要
We present a catalog of physical parameters for powerful jet-accretion disk-black hole systems in one of the largest samples of gamma-ray emitting jetted active galactic nuclei (AGNs), including jet kinetic and radiative powers, jet radiative efficiencies, bulk Lorentz factors, black hole spins, accretion-disk magnetic fields and Compton dominance. Comparing jet kinetic power estimators for blazars, values derived from spectral energy distribution (SED) fitting tend to exceed those estimated via cavity power and other scaling relations. For radiatively efficient AGNs, most sources are inferred to possess high spins; for radiatively inefficient AGNs, many potentially have high spins, though some may differ. This indicates that black hole spin does not effectively distinguish radiatively efficient from inefficient jetted AGNs. Our results suggest accretion-disk magnetic field strength as a key discriminator, proposing a tentative dividing value of $\approx 10^{3.9}$ Gauss between radiatively efficient and inefficient populations. Jet power and bulk Lorentz factor exhibit significant correlations with black hole mass in radiatively efficient AGNs, while weak-to-moderate correlations are observed in radiatively inefficient AGNs within narrow accretion-rate bins. Our analysis reveals that jet power correlates with both disk luminosity and magnetic field strength. Furthermore, correlations linking Eddington ratio and Compton dominance with jet properties are consistent with the jet-accretion connection. Finally, jet radiative power and bulk Lorentz factor show a potential dependence on black hole spin. These results are consistent with the scenario in which jets are powered and accelerated by energy extraction from rapidly spinning black holes via accretion-disk magnetic fields.
Comments25 pages, 11 figures, 3 tables, accepted for publication in ApJ
