论文标题

Blazar序列修订了

The blazar sequence revised

论文作者

Rueda-Becerril, Jesús M., Harrison, Amanda O., Giannios, Dimitrios

论文摘要

我们提出并测试一个相当简单的想法,可以解释大黄花序列:所有喷气式飞机都以每个Baryon的能量(独立于他们的力量)发射。例如,正如无线电中观察到的那样,最强大的喷气机(FSRQ)是最强大的喷气机(FSRQ),设法加速到高散装洛伦兹因子。结果,发射区域将具有相当适度的磁化强度,该磁力将诱导其中的陡峭粒子光谱,并在伽马射线中具有相当陡峭的发射光谱。特别是在\ textit {fermi} -lat频段中。对于较弱的喷气机,即Bl lacertae对象(Bl lacs),相反的是真实的;即,射流没有达到非常高的洛伦兹因子,从而导致更多可用于非热粒子加速的磁能和更硬发射光谱。此外,此模型只需要少数参数。通过数值模拟,我们已经完成了在上述模型之后从基准来源重现光谱能量分布和光曲线的。借助宽带光谱的完整演变,我们能够详细研究任何特定频段在任何给定阶段的光谱特征。最后,比较了数值结果,并与观测结果形成鲜明对比。

We propose and test a fairly simple idea that could account for the blazar sequence: all jets are launched with similar energy per baryon, independently of their power. For instance, flat-spectrum radio quasars (FSRQs), the most powerful jets, manage to accelerate to high bulk Lorentz factor, as observed in the radio. As a result, the emission region will have a rather modest magnetization which will induce a steep particle spectra therein and a rather steep emission spectra in the gamma-rays; particularly in the \textit{Fermi}-LAT band. For the weaker jets, namely BL Lacertae objects (BL Lacs), the opposite holds true; i.e., the jet does not achieve a very high bulk Lorentz factor, leading to more magnetic energy available for non-thermal particle acceleration and harder emission spectra. Moreover, this model requires but a handful of parameters. By means of numerical simulations we have accomplished to reproduce the spectral energy distributions and light-curves from fiducial sources following the aforementioned model. With the a complete evolution of the broadband spectra we were able to study in detail the spectral features at any particular frequency band at any given stage. Finally numerical results are compared and contrasted with observations.

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