The new surprising behaviour of the two "prototype" blazars PKS 2155-304 and 3C 279

被引：0

作者：

Costamante, Luigi ^{[1
]}

Aharonian, Felix ^{[2
]}

Buehler, Rolf ^{[2
]}

Khangulyan, Dmitry ^{[2
]}

Reimer, Anita ^{[1
]}

Reimer, Olaf ^{[1
]}

机构：

[1] Stanford Univ, HEPL KIPAC, Stanford, CA 94305 USA

[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

来源：

HIGH ENERGY GAMMA-RAY ASTRONOMY | 2009年 / 1085卷

关键词：

PKS; 2155-304; 3C; 279; VHE; gamma-ray; blazars; BL-LAC OBJECTS; EXTRAGALACTIC BACKGROUND LIGHT; GAMMA-RAYS; TEV BLAZARS; EMISSION; ABSORPTION; RADIATION; QUASARS; SPECTRA; MODEL;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 gamma-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.

引用

页码：644 / +

页数：2

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