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Evaluating Optical Classification for Fermi Blazar Candidates with a Statistical Method Using Broadband Spectral Indices
Yi, Ting-Feng1,2; Zhang, Jin3,4; Lu, Rui-Jing2; Huang, Rui2; Liang, En-Wei2,3
2017-03-20
Source PublicationASTROPHYSICAL JOURNAL
Volume838Issue:1
AbstractWe aim to test whether a blazar candidate of uncertain type (BCU) in the third Fermi catalog of active galactic nuclei (3LAC) can be potentially classified as a BL Lac object or a flat-spectrum radio quasar (FSRQ) by performing a statistical analysis of its broadband spectral properties. We find that 34% of the radio-selected BCUs (583 BCUs) are BL Lac-like and 20% are FSRQ-like, at a 90% level of confidence. Similarly, 77.3% of the X-rayselected BCUs (176 BCUs) are evaluated as BL Lac-like and 6.8% may be FSRQ-like sources. And 88.7% of the BL Lac-like BCUs that have synchrotron peak frequencies available are high synchrotron peaked BL Lacs in the X-ray-selected BCUs. The percentages are accordingly 62% and 7.3% in the sample of 124 optically selected BCUs. The high ratio of the number of BL Lac-like sources to the number of FSRQ-like BCUs in the X-rayselected and optically selected BCU samples is due to selection effects. Examining the consistency between our evaluation and spectroscopic identification case by case with a sample of 78 radio-selected BCUs, it is found that the statistical analysis and its resulting classifications agree with the results of the optical follow-up spectroscopic observations. Our observation campaign for high-| rs| BCUs selected with our method, i. e., |rs| > 0.8, is ongoing.
SubtypeArticle
KeywordBl Lacertae Objects: General Gamma Rays: Galaxies Methods: Statistical Quasars: General
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Natural Science Foundation of China(11573034 ; National Natural Science Foundation of China(11573034 ; National Basic Research Program (973 Programme) of China(2014CB845800) ; National Basic Research Program (973 Programme) of China(2014CB845800) ; Yunnan province education department project(2014Y138) ; Yunnan province education department project(2014Y138) ; Guangxi Science Foundation(2013GXNSFFA019001 ; Guangxi Science Foundation(2013GXNSFFA019001 ; Astronomy of the National Nature Science Foundation of China ; Astronomy of the National Nature Science Foundation of China ; Chinese Academy of Science(U1431123) ; Chinese Academy of Science(U1431123) ; 11533003 ; 11533003 ; 2014GXNSFAA118011) ; 2014GXNSFAA118011) ; 11363002 ; 11363002 ; 11463001 ; 11463001 ; 11373036) ; 11373036) ; National Natural Science Foundation of China(11573034 ; National Natural Science Foundation of China(11573034 ; National Basic Research Program (973 Programme) of China(2014CB845800) ; National Basic Research Program (973 Programme) of China(2014CB845800) ; Yunnan province education department project(2014Y138) ; Yunnan province education department project(2014Y138) ; Guangxi Science Foundation(2013GXNSFFA019001 ; Guangxi Science Foundation(2013GXNSFFA019001 ; Astronomy of the National Nature Science Foundation of China ; Astronomy of the National Nature Science Foundation of China ; Chinese Academy of Science(U1431123) ; Chinese Academy of Science(U1431123) ; 11533003 ; 11533003 ; 2014GXNSFAA118011) ; 2014GXNSFAA118011) ; 11363002 ; 11363002 ; 11463001 ; 11463001 ; 11373036) ; 11373036)
DOI10.3847/1538-4357/aa63f5
WOS KeywordACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; BL-LACERTAE OBJECTS ; GAMMA-RAY SOURCES ; SPECTROSCOPIC OBSERVATIONS ; ENERGY-DISTRIBUTIONS ; JET PROPERTIES ; SOURCE CATALOG ; LAC OBJECTS ; EMISSION
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(11573034 ; National Natural Science Foundation of China(11573034 ; National Basic Research Program (973 Programme) of China(2014CB845800) ; National Basic Research Program (973 Programme) of China(2014CB845800) ; Yunnan province education department project(2014Y138) ; Yunnan province education department project(2014Y138) ; Guangxi Science Foundation(2013GXNSFFA019001 ; Guangxi Science Foundation(2013GXNSFFA019001 ; Astronomy of the National Nature Science Foundation of China ; Astronomy of the National Nature Science Foundation of China ; Chinese Academy of Science(U1431123) ; Chinese Academy of Science(U1431123) ; 11533003 ; 11533003 ; 2014GXNSFAA118011) ; 2014GXNSFAA118011) ; 11363002 ; 11363002 ; 11463001 ; 11463001 ; 11373036) ; 11373036) ; National Natural Science Foundation of China(11573034 ; National Natural Science Foundation of China(11573034 ; National Basic Research Program (973 Programme) of China(2014CB845800) ; National Basic Research Program (973 Programme) of China(2014CB845800) ; Yunnan province education department project(2014Y138) ; Yunnan province education department project(2014Y138) ; Guangxi Science Foundation(2013GXNSFFA019001 ; Guangxi Science Foundation(2013GXNSFFA019001 ; Astronomy of the National Nature Science Foundation of China ; Astronomy of the National Nature Science Foundation of China ; Chinese Academy of Science(U1431123) ; Chinese Academy of Science(U1431123) ; 11533003 ; 11533003 ; 2014GXNSFAA118011) ; 2014GXNSFAA118011) ; 11363002 ; 11363002 ; 11463001 ; 11463001 ; 11373036) ; 11373036)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398727400012
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8248
Collection空间科学研究部
Affiliation1.Yunnan Normal Univ, Dept Phys, Kunming 650500, Peoples R China
2.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA
Recommended Citation
GB/T 7714
Yi, Ting-Feng,Zhang, Jin,Lu, Rui-Jing,et al. Evaluating Optical Classification for Fermi Blazar Candidates with a Statistical Method Using Broadband Spectral Indices[J]. ASTROPHYSICAL JOURNAL,2017,838(1).
APA Yi, Ting-Feng,Zhang, Jin,Lu, Rui-Jing,Huang, Rui,&Liang, En-Wei.(2017).Evaluating Optical Classification for Fermi Blazar Candidates with a Statistical Method Using Broadband Spectral Indices.ASTROPHYSICAL JOURNAL,838(1).
MLA Yi, Ting-Feng,et al."Evaluating Optical Classification for Fermi Blazar Candidates with a Statistical Method Using Broadband Spectral Indices".ASTROPHYSICAL JOURNAL 838.1(2017).
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