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Fast gamma-Ray Variability in Blazars beyond Redshift 3
Li, Shang1,2; Xia, Zi-Qing1,3; Liang, Yun-Feng1; Liao, Neng-Hui1; Fan, Yi-Zhong1
2018-02-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume853Issue:2Pages:11
Abstract

High-redshift blazars are one of the most powerful sources in the universe and gamma-ray variability carries crucial information about their relativistic jets. In this wor gamma we present results of the first systematical temporal analysis of Fermi-LAT data of all known seven gamma-ray blazars beyond redshift 3. Significant long-term.-ray variability is found from five sources in monthly gamma-ray light curves, in which three of them are reported for the first time. Furthermore, intraday gamma-ray variations are detected from NVSS J053954-283956 and NVSS J080518+ 614423. The doubling variability timescale of the former source is limited as short as less than or similar to 1 hr (at the source frame). Together with variability amplitude over one order of magnitude, NVSS J053954-283956 is the most distant gamma-ray flaring blazar so far. Meanwhile, intraday optical variability of NVSS J163547+ 362930 is found based on an archival PTF/iPTF light curve. Benefiting from the multi-wavelength activity of these sources, constraints on their Doppler factors, as well as the locations of the gamma-ray radiation region and indications for the SDSS high redshift jetted active galactic nuclei deficit are discussed.

Keywordgalaxies: active galaxies: high-redshift galaxies: jets gamma rays: galaxies quasars: general radiation mechanisms: non-thermal
DOI10.3847/1538-4357/aaa3fb
WOS KeywordACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; RELATIVISTIC JETS ; TEV VARIABILITY ; DOPPLER FACTORS ; DISTANT BLAZAR ; SKY SURVEY ; EMISSION ; CATALOG ; QUASARS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000424011300020
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22203
Collection中国科学院紫金山天文台
Corresponding AuthorLiao, Neng-Hui
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Li, Shang,Xia, Zi-Qing,Liang, Yun-Feng,et al. Fast gamma-Ray Variability in Blazars beyond Redshift 3[J]. ASTROPHYSICAL JOURNAL,2018,853(2):11.
APA Li, Shang,Xia, Zi-Qing,Liang, Yun-Feng,Liao, Neng-Hui,&Fan, Yi-Zhong.(2018).Fast gamma-Ray Variability in Blazars beyond Redshift 3.ASTROPHYSICAL JOURNAL,853(2),11.
MLA Li, Shang,et al."Fast gamma-Ray Variability in Blazars beyond Redshift 3".ASTROPHYSICAL JOURNAL 853.2(2018):11.
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