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arXiv 1609.05697astro-ph.HE
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Fermi 2LAC blazar的光谱能量分布曲率、逆康普顿分量的主导过程及喷流的其它性质

Curvature of the spectral energy distribution, the dominant process for inverse Compton component and other jet properties in Fermi 2LAC blazars

R. Xue, D. Luo, L. M. Du, Z. R. Wang, Z. H. Xie, T. F. Yi, D. R. Xiong, Y. B. Xu, W. G. Liu, X. L. Yu

摘要:

我们拟合的光谱能量分布(SED)的一个大样本的费米2LAC耀变体的成员同步加速器和逆康普顿(IC)模型。我们的主要结果如下。(i)正如以前的工作所建议的,峰值频率和曲率之间的相关性可以解释统计或随机粒子加速机制。对于BL Lac,我们发现同步辐射峰值频率与其曲率之间存在线性相关。相关性的斜率与随机加速机制一致,并证实了先前的研究。对于FSRQ,我们也发现了线性相关性,但其斜率无法用以前的理论模型来解释。(ii)我们发现IC光度和同步辐射光度之间存在显著的相关性。FSRQ的相关性斜率与EC过程一致。BL Lac的相关斜率与SSC过程一致。(iii)我们发现了几个显着的相关性IC曲率和耀变体的几个基本参数(黑洞质量,宽线光度,喷流的洛伦兹因子)。我们还发现了耀变体的辐射热光度与这些基本参数之间的显著相关性,这表明喷流的起源是Blandford $\&$ Znajek和Blandford $\&$ Payne提出的机制的混合。

英文摘要:

We fit the spectral energy distributions (SEDs) of members of a large sample of Fermi 2LAC blazars to synchrotron and inverse Compton (IC) models. Our main results are as follows. (i) As suggested by previous works, the correlation between peak frequency and curvature can be explained by statistical or stochastic particle acceleration mechanisms. For BL Lacs, we find a linear correlation between synchrotron peak frequency and its curvature. The slope of the correlation is consistent with the stochastic acceleration mechanisms and confirm previous studies. For FSRQs, we also find a linear correlation, but its slope cannot be explained by previous theoretical models. (ii) We find a significant correlation between IC luminosity and synchrotron luminosity. The slope of the correlation of FSRQs is consistent with the EC process. And the slope of the correlation of BL Lac is consistent with the SSC process. (iii) We find several significant correlations between IC curvature and several basic parameters of blazars (black hole mass, broad line luminosity, the Lorentz factor of jet). We also find significant correlations between bolometric luminosity and these basic parameters of blazars which suggest that the origin of jet is a mixture of the mechanisms proposed by Blandford $\&$ Znajek and by Blandford $\&$ Payne.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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