The new surprising behaviour of the two “prototype” blazars PKS 2155‐304 and 3C 279
The new surprising behaviour of the two “prototype” blazars PKS 2155‐304 and 3C 279
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DOI：
10.1063/1.3076757
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发表时间：
2009-01
期刊：
影响因子：
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通讯作者：
L. Costamante;F. Aharonian;R. Bühler;D. Khangulyan;Anita Reimer;Olaf Reimer
中科院分区：
文献类型：
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作者：
L. Costamante;F. Aharonian;R. Bühler;D. Khangulyan;Anita Reimer;Olaf Reimer
最近的VHE观测揭示了位于blazar序列两侧的两个著名blazar的惊人行为。PKS 2155 - 304首次在HBL中显示了大的康普顿优势，高γ射线光度以及X射线和VHE通量之间的立方关系。3C 279是VHE检测到的第一个FSRQ。克服由BLR发射引起的显著吸收所需的高亮度不能容易地与历史和准同步SED特性相协调。这两个例子都对耀变体的结构和环境场有了新的认识。相反，以前的权利要求，它也表明，3C 279-作为任何FSRQ-不能提供强大的EBL约束。
Recent VHE observations have unveiled a surprising behaviour in two well‐known blazars at opposite sides of the blazar sequence. PKS 2155‐304 have shown for the first time in an HBL a large Compton dominance, high γ‐ray luminosities and a cubic relation between X‐ray and VHE fluxes. 3C 279 is the first FSRQ detected at VHE. The high luminosity required to overcome the significant absorption caused by the BLR emission cannot be easily reconciled with the historical and quasi‐simultaneous SED properties. Both cases shed a new light on the structure and ambient fields of blazars. Contrary to previous claims, it is also shown that 3C 279—as any FSRQ—cannot provide robust constraints on the EBL.