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The connection between radio and gamma-ray emission in Fermi/LAT blazars
Fan XL(范绪亮)1,2,4; Bai JM(白金明)1,2; Liu HT(刘洪涛)1,2; Chen, L3; Liao NH(廖能惠)1,2,4; Fan, XL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2012-11
卷号12期号:11页码:1475-1485
DOI10.1088/1674-4527/12/11/003
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收录类别SCI
关键词Bl Lacertae Objects: General Galaxies: Jets Quasars: General Radio Continuum: Galaxies Gamma Rays: Observations
摘要We collect the second Large Area Telescope AGN catalog (2LAC) and Monitor of Jets in AGN with VLBA Equipment (MOJAVE) quasi-simultaneous data to investigate the radio-gamma connection of blazars. The cross sample contains 166 sources. The statistical analysis based on this sample confirms positive correlations between these two bands, but the correlations become weaker as the gamma-ray energy increases. The statistical results between various parameters show negative correlations of gamma-ray photon spectral index with gamma-ray loudness for both Flat Spectrum Radio Quasars (FSRQs) and BL Lacertae objects, positive correlations of gamma-ray variability index with the gamma-ray loudness for FSRQs, a negative correlation of the gamma-ray variability index with the gamma-ray photon spectral index for FSRQs, and negative correlations of gamma-ray photon spectral index with gamma-ray luminosity for FSRQs. These results suggest that the gamma-ray variability may be due to changes inside the gamma-ray emission region like the injected power, rather than changes in the photon density of the external radiation fields, and the variability amplitude tends to be larger as the gamma-rays are closer to the high energy peak of the spectral energy distribution (SED). No correlation of variability index found for BL Lacertae objects implies that variability behavior may differ below and above the peak energy.
项目资助者National Natural Science Foundation of China ; National Natural Science Foundation of China [10903025, 10973034, 11103060, 11133006] ; National Basic Research Program of China (973 Program) [2009CB824800]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
归档日期2012-11-05
WOS记录号WOS:000311523700003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LARGE-AREA TELESCOPE ; ACTIVE GALACTIC NUCLEI ; JET ; CATALOG ; VARIABILITY ; PROGRAM ; FLARES ; ERA
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5415
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Fan, XL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatories, Chinese Academy of Sciences, Shanghai 200030, China
4.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
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Fan XL,Bai JM,Liu HT,et al. The connection between radio and gamma-ray emission in Fermi/LAT blazars[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(11):1475-1485.
APA Fan XL,Bai JM,Liu HT,Chen, L,Liao NH,&Fan, XL .(2012).The connection between radio and gamma-ray emission in Fermi/LAT blazars.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(11),1475-1485.
MLA Fan XL,et al."The connection between radio and gamma-ray emission in Fermi/LAT blazars".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.11(2012):1475-1485.
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