BARYON LOADING EFFICIENCY AND PARTICLE ACCELERATION EFFICIENCY OF RELATIVISTIC JETS: CASES FOR LOW LUMINOSITY BL LACS
BARYON LOADING EFFICIENCY AND PARTICLE ACCELERATION EFFICIENCY OF RELATIVISTIC JETS: CASES FOR LOW LUMINOSITY BL LACS
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DOI：
10.3847/0004-637x/828/1/13
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Y. Inoue;Yasuyuki T. Tanaka
中科院分区：
文献类型：
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作者：
Y. Inoue;Yasuyuki T. Tanaka
由超大质量黑洞发射的相对论性喷流，即所谓的活动星系核（agn），被认为是宇宙中能量最高的粒子加速器。然而，从吸积流中向喷流加载重子的效率和它们的粒子加速效率一直被隐藏在神秘之中。利用最新的数据集，采用单区静态同步加速器自康普顿（SSC）模型，对13 TeV伽玛射线探测到的高频峰BL lac （HBLs）的静态光谱进行了多波长光谱分析。我们根据扩散激波加速度理论确定了最小、冷却中断和最大电子洛伦兹因子。我们发现HBLs具有和的辐射效率，其中PB和Pe分别是坡印亭和电子功率。通过假设每一个质子有10个轻子，射流功率与黑洞质量的关系为，其中和分别为射流功率和爱丁顿光度。在我们的模型假设下，我们进一步发现HBLs的射流生产效率为，质量加载效率为。我们还利用最新的Swift/BAT数据研究了耀变体区的粒子加速效率。我们的样品普遍具有粒子加速效率，这对于将粒子加速到超高能量宇宙射线（UHECR）状态是低效的。这意味着，如果假设基于DSA理论的单区域SSC模型，UHECR加速点不应该是静止低功率AGN射流的耀斑区域。
Relativistic jets launched by supermassive black holes, so-called active galactic nuclei (AGNs), are known as the most energetic particle accelerators in the universe. However, the baryon loading efficiency onto the jets from the accretion flows and their particle acceleration efficiencies have been veiled in mystery. With the latest data sets, we perform multi-wavelength spectral analysis of quiescent spectra of 13 TeV gamma-ray detected high-frequency-peaked BL Lacs (HBLs) following one-zone static synchrotron self-Compton (SSC) model. We determine the minimum, cooling break, and maximum electron Lorentz factors following the diffusive shock acceleration (DSA) theory. We find that HBLs have and the radiative efficiency , where PB and Pe is the Poynting and electron power, respectively. By assuming 10 leptons per one proton, the jet power relates to the black hole mass as , where and is the jet power and the Eddington luminosity, respectively. Under our model assumptions, we further find that HBLs have a jet production efficiency of and a mass loading efficiency of . We also investigate the particle acceleration efficiency in the blazar zone by including the most recent Swift/BAT data. Our samples ubiquitously have particle acceleration efficiencies of , which is inefficient to accelerate particles up to the ultra-high-energy-cosmic-ray (UHECR) regime. This implies that the UHECR acceleration sites should not be the blazar zones of quiescent low power AGN jets, if one assumes the one-zone SSC model based on the DSA theory.