The broadband spectral energy distributions of SDSS blazarsSupported by the National Natural Science Foundation of China

We compiled the radio, optical and X-ray data of blazars from the Sloan Digital Sky Survey database, and presented the distribution of luminosities and broadband spectral indices. The distribution of luminosities shows that the averaged luminosity of flat spectrum radio quasars (FSRQs) is larger tha...

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Published inResearch in astronomy and astrophysics Vol. 15; no. 7; pp. 929 - 938
Main Authors Li, Huai-Zhen, Chen, Luo-En, Jiang, Yun-Guo, Yi, Ting-Feng
Format Journal Article
LanguageEnglish
Published National Astronomical Observatories of Chinese Academy of Sciences and IOP Publishing 01.07.2015
Subjects
BL Lacertae objects: general
galaxies: active
galaxies: fundamental parameters
quasars: general
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Summary:We compiled the radio, optical and X-ray data of blazars from the Sloan Digital Sky Survey database, and presented the distribution of luminosities and broadband spectral indices. The distribution of luminosities shows that the averaged luminosity of flat spectrum radio quasars (FSRQs) is larger than that of BL Lacertae (BL Lac) objects. On the other hand, the broadband spectral energy distribution reveals that FSRQs and low energy peaked BL Lac objects have similar spectral properties, but high energy peaked BL Lac objects have a distinct spectral property. This may be due to the fact that different subclasses of blazars have different intrinsic environments and are at different cooling levels. Even so, a unified scheme is also revealed from the color-color diagram, which hints that there are similar physical processes operating in all objects under a range of intrinsic physical conditions or beaming parameters.
ISSN:1674-4527
DOI:10.1088/1674-4527/15/7/001