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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.
Source PublicationASTROPHYSICS AND SPACE SCIENCE
2012-08
Volume340Issue:2Pages:331-349
DOI10.1007/s10509-012-1062-1
Contribution Rank第1完成单位
Indexed BySCI
KeywordBl Lacertae Objects: General Infrared Radiation Methods: Statistical
AbstractWe 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.
Funding OrganizationNational Aeronautics and Space Administration
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-640X
URL查看原文
Archive Date2012-07-09
WOS IDWOS:000305784100012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACTIVE 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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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7050
Collection星系研究组
Corresponding AuthorMao, LS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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