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Is BZB J1450+5201 the most distant gamma-ray BL Lacertae object?

文献类型：期刊论文

作者Liao, Neng-Hui1,2,3; Bai, Jin-Ming1,2; Wang, Jian-Guo1,2; Liu, Hong-Tao1,2; Zhang, Jiu-Jia1,2,3; Jiang, Ning4,5; Yuan, Zun-Li1,2; Chen, Liang6
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2015-03-01
卷号15期号:3页码:313-326
关键词galaxies: active BL Lacertae objects: individual (BZB J1450+5201) gamma rays: galaxies radiation mechanisms: non-thermal
英文摘要BL Lacertae (BL Lac) objects at high redshifts (z >= 2) are rarely detected. Through careful analysis of its Sloan Digital Sky Survey spectrum, BZB J1450+5201 is confirmed to be a high-z BL Lac object with z >= 2.471 by identifying the Ly alpha 1216 and CIV 1548/1550 absorption lines. This indicates that BZB J1450+5201 is the most distant BL Lac object discovered to date. Careful analysis of the five-year Fermi-LAT data of 2FGL J1451.0+5159 shows that its gamma-ray emission is robust with a confidence level of 6.2 sigma at 1-3 GeV and 6.7 sigma at 3-10 GeV. This analysis with the five-year data overcomes confusion with its bright neighbor, which is a problem when analyzing the two-year data. In addition, 2FGL J1451.0+5159 is confirmed to be associated with BZB J1450+5201 using the five-year data. The analysis of multiwavelength data, from radio to gamma-ray energies, indicates that BZB J1450+5201 is an intermediate synchrotron peaked (ISP) source. Its multiwavelength properties are consistent with distributions of other ISP sources at lower redshifts in the second Fermi-LAT AGN catalog. The pure synchrotron self-Compton (SSC) model seems to be disfavored, but the scattering of weak external emission plus the SSC process can provide a satisfactory description of the broadband emission.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]LARGE-AREA TELESCOPE ; DIGITAL SKY SURVEY ; INFRARED-SURVEY-EXPLORER ; EXTRAGALACTIC BACKGROUND LIGHT ; ACTIVE GALACTIC NUCLEI ; BLAZAR S5 0716+714 ; DATA RELEASE ; MULTIWAVELENGTH OBSERVATIONS ; OPTICAL SPECTROSCOPY ; DETECTED BLAZARS
收录类别SCI
语种英语
WOS记录号WOS:000350680800002
公开日期2015-08-18
源URL[http://119.78.226.72/handle/331011/18218]  
专题上海天文台_星系宇宙学重点实验室
作者单位1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
5.Univ Sci & Technol China, Dept Astron, Hefei 230026, Peoples R China
6.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Liao, Neng-Hui,Bai, Jin-Ming,Wang, Jian-Guo,et al. Is BZB J1450+5201 the most distant gamma-ray BL Lacertae object?[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(3):313-326.
APA Liao, Neng-Hui.,Bai, Jin-Ming.,Wang, Jian-Guo.,Liu, Hong-Tao.,Zhang, Jiu-Jia.,...&Chen, Liang.(2015).Is BZB J1450+5201 the most distant gamma-ray BL Lacertae object?.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(3),313-326.
MLA Liao, Neng-Hui,et al."Is BZB J1450+5201 the most distant gamma-ray BL Lacertae object?".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.3(2015):313-326.

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来源：上海天文台

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