Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380
文献类型：期刊论文
| 作者 | Zhang, Peng-fei1,2; Yan DH(闫大海)3,4,5 ; Liao, Neng-hui1; Zeng, Wei2; Wang JC(王建成)3,4,5; Cao, Li-jia2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-06-10 |
| 卷号 | 842期号:1 |
| 关键词 | Galaxies: jets gamma rays: galaxies radiation mechanisms: non-thermal |
| ISSN号 | 0004-637X |
| 产权排序 | 第3完成单位 |
| 通讯作者 | Zhang, Peng-fei(Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China) |
| 英文摘要 | We search for gamma-ray and optical periodic modulations in distant flat-spectrum radio quasar (FSRQ) PKS 0426-380 (the redshift z = 1.1). Using two techniques (i. e., the maximum likelihood optimization and the exposure-weighted aperture photometry), we obtain gamma-ray light curves from Fermi-LAT Pass 8 data covering from 2008 August to 2016 December. We then analyze the light curves with the Lomb-Scargle periodogram and the weighted wavelet Z-transform. A gamma-ray quasi-periodicity with a period of 3.35 +/- 0.68 yr is found at the significance level of. 3.6 s. The optical-UV flux covering from 2005 August to 2013 April provided by the ASI Science Data Center is also analyzed, but no significant quasi-periodicity is found. It should be pointed out that the result of the optical-UV data could be tentative because of the incompleteness of the data. Further long-term multiwavelength monitoring of this FSRQ is needed to confirm its quasi-periodicity. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 天文学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BL LACERTAE OBJECTS ; LARGE-AREA TELESCOPE ; LAC OBJECTS ; PHYSICAL-PROPERTIES ; FERMI BLAZARS ; TIME-SERIES ; SPACED DATA ; OSCILLATIONS ; MODEL ; JETS |
| 收录类别 | SCI |
| 原文出处 | http://stacks.iop.org/0004-637X/842/i=1/a=10?key=crossref.b1c87168438ad147683667d297815565 |
| 语种 | 英语 |
| WOS记录号 | WOS:000402877900005 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10090]  |
| 专题 | 云南天文台_高能天体物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China 2.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China 3.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China |
| 推荐引用方式 GB/T 7714 | Zhang, Peng-fei,Yan DH,Liao, Neng-hui,et al. Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380[J]. ASTROPHYSICAL JOURNAL,2017,842(1). |
| APA | Zhang, Peng-fei,Yan DH,Liao, Neng-hui,Zeng, Wei,Wang JC,&Cao, Li-jia.(2017).Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380.ASTROPHYSICAL JOURNAL,842(1). |
| MLA | Zhang, Peng-fei,et al."Possible Quasi-periodic Modulation in the z=1.1 Gamma-Ray Blazar PKS 0426-380".ASTROPHYSICAL JOURNAL 842.1(2017). |
入库方式： OAI收割
来源：云南天文台
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