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Fast gamma-Ray Variability in Blazars beyond Redshift 3
Li, Shang; Xia, Zi-Qing; Liang, Yun-Feng; Liao, Neng-Hui; Fan, Yi-Zhong
2018
发表期刊ASTROPHYSICAL JOURNAL
卷号853期号:2页码:159
摘要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.
语种英语
WOS记录号WOS:000424011300020
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文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/17979
专题暗物质和空间天文实验室
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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):159.
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),159.
MLA Li, Shang,et al."Fast gamma-Ray Variability in Blazars beyond Redshift 3".ASTROPHYSICAL JOURNAL 853.2(2018):159.
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