The Blazar Sequence 2.0
The Blazar Sequence 2.0
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DOI：
10.3390/galaxies4040036
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
G. Ghisellini
中科院分区：
文献类型：
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作者：
G. Ghisellini
本文讨论了3LAC星表中所有由费米卫星探测到的有红移的耀变体的光谱能量分布。从现象学的角度来看，所谓的“blazar序列”将被更新，没有理论或模型。将显示：（i）纯数据表明喷流和吸积功率是相关的;（ii）更新的耀变体序列保持了旧版本的特性，尽管γ射线发射的优势不那么明显;（iii）在低辐射热光度下，两种不同类型的物体具有相同的高能量功率：低黑洞质量的平谱射电类星体和高质量的BL拉克。因此，在低光度，有一个非常大的分散的SED形状;（iv）在低功率BL拉克，宿主星系的贡献是很重要的。值得注意的是，BL拉克的宿主星系的光度分布是在一个非常狭窄的范围内传播;（v）两个光滑连接的幂律的简单和可以很好地描述耀变体。
This paper discusses the spectral energy distribution (SED) of all blazars with redshift detected by the Fermi satellite and listed in the 3LAC catalog. The so called “blazar sequence” from the phenomenological point of view will be updated, with no theory or modelling. It will be shown that: (i) pure data show that jet and accretion power are related; (ii) the updated blazar sequence maintains the properties of the old version, albeit with a less pronounced dominance of the γ-ray emission; (iii) at low bolometric luminosities, two different types of objects have the same high energy power: low black hole mass flat spectrum radio quasars and high mass BL Lacs. Therefore, at low luminosities, there is a very large dispersion of SED shapes; (iv) in low power BL Lacs, the contribution of the host galaxy is important. Remarkably, the luminosity distribution of the host galaxies of BL Lacs are spread in a very narrow range; (v) a simple sum of two smoothly joining power laws can describe the blazar SEDs very well.