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On the relation of mid-infrared emission with the gamma-ray properties of Fermi-detected BL Lac objects
Mao LS(毛李胜)1,2,3; Mao, LS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊ASTROPHYSICS AND SPACE SCIENCE
2012-08
卷号340期号:2页码:331-349
DOI10.1007/s10509-012-1062-1
产权排序第1完成单位
收录类别SCI
关键词Bl Lacertae Objects: General Infrared Radiation Methods: Statistical
摘要We present the Wide-field Infrared Survey Explorer (WISE) photometric data of 158 Fermi-detected BL Lacs and investigate the nature of their mid-infrared (MIR) continuum emission. In the [3.4]-[4.6]-[12] mu m color-color diagram, nearly all their colors lie within the WISE Blazar strip (WBS), which is an effective diagnostic tool to separate sources dominated by non-thermal radiation from those dominated by thermal radiation. This feature indicates that their MIR emission is predominantly non-thermal. This argument is further supported by the strong radio-MIR flux correlation. We derive their MIR spectral indices and compare them with the near-infrared (NIR) spectral indices. We find that there is a prevalent steepening from MIR spectrum to NIR spectrum. The low-frequency-peaked BL Lacs (LBLs) have on average a larger MIR spectral index and a higher MIR luminosity than the high-frequency-peaked BL Lacs (HBLs), and the intermediate-frequency-peaked BL Lacs (IBLs) appear to bridge them. The MIR-gamma-ray flux correlation is highly significant. A strong positive correlation is also found between the MIR and gamma-ray spectral indices. The gamma-ray-MIR loudness is significantly correlated with the synchrotron peak frequency. Finally we propose that the gamma-rays are highly associated with the MIR emission from the jet, and the gamma-ray emission is likely from the synchrotron self-Compton process for the Fermi-detected BL Lacs in our sample.
项目资助者National Aeronautics and Space Administration
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-640X
URL查看原文
归档日期2012-07-09
WOS记录号WOS:000305784100012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; SPECTRAL ENERGY-DISTRIBUTIONS ; NEAR-INFRARED EMISSION ; POINT-SOURCE CATALOG ; SELF-COMPTON MODEL ; LACERTAE OBJECTS ; X-RAY ; LOUD BLAZARS ; BRIGHT BLAZARS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7050
专题星系研究组
通讯作者Mao, LS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, CAS, 650011, Kunming, China
2.Physics Department, Yunnan Normal University, 650500, Kunming, China
3.Graduate School of Chinese Academy of Sciences, 100049, Beijing, China
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Mao LS,Mao, LS . On the relation of mid-infrared emission with the gamma-ray properties of Fermi-detected BL Lac objects[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,340(2):331-349.
APA Mao LS,&Mao, LS .(2012).On the relation of mid-infrared emission with the gamma-ray properties of Fermi-detected BL Lac objects.ASTROPHYSICS AND SPACE SCIENCE,340(2),331-349.
MLA Mao LS,et al."On the relation of mid-infrared emission with the gamma-ray properties of Fermi-detected BL Lac objects".ASTROPHYSICS AND SPACE SCIENCE 340.2(2012):331-349.
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