KMS National Astronomical Observatories, CAS
| Diversity of gamma-ray and radio variability of bright blazars and implications for gamma-ray emission location | |
| Zhang, Hai-Ming1,2; Wang, Zhen-Jie1; Zhang, Jin3; Yi, Ting-Feng4; Chen, Liang5; Lu, Rui-Jing1; Liang, En-Wei1 | |
| 2020-06-01 | |
| Source Publication | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| ISSN | 0004-6264 |
| Volume | 72Issue:3Pages:19 |
| Abstract | Violent multi-wavelength variabilities are observed in gamma-ray-selected blazars. We present an analysis of long-term light curves for eight bright blazars to explore the co-variation pattern in the gamma-ray and radio bands. We extract their gamma-ray light curves and spectra with data observed by the Fermi Large Area Telescope (LAT) since 2008. We find diverse co-variation patterns between the gamma-ray and radio (at 43 GHz) fluxes in these sources. The gamma-ray and radio fluxes of 3C454.3 and PKS 1633+382 are correlated without any time lag, suggesting that they are from the same radiation region. Similar correlation is also observed in 3C 273 and PKS 1222+216, but the radio flux lags behind the gamma-ray flux by approximately similar to 160d and similar to 290d, respectively. This likely suggests that their gamma-ray emission regions are located the upstream of their radio cores at 43 GHz. The gamma-ray and radio fluxes of the other four blazars are not correlated, implying that the gamma-ray and radio emission may be from different regions in their jets. The gamma-ray light curves of the eight blazars can be decomposed into some components with long-timescale variability and some fast spike flares. We propose that they may be attributed to the central engine activity and the magnetic reconnection process or turbulence in the local emission region, respectively. |
| Keyword | galaxies: active galaxies: jets gamma rays: galaxies radiation mechanisms: non-thermal |
| Funding Organization | NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation |
| DOI | 10.1093/pasj/psaa029 |
| WOS Keyword | JETS ; ABSORPTION ; RADIATION ; SHOCKS ; LIGHT |
| Language | 英语 |
| Funding Project | NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China[11973050] ; National Natural Science Foundation of China[11533003] ; National Natural Science Foundation of China[11863007] ; National Natural Science Foundation of China[11851304] ; National Natural Science Foundation of China[U1938106] ; National Natural Science Foundation of China[U1731239] ; Guangxi Science Foundation[AD17129006] ; Guangxi Science Foundation[2018GXNSFDA281033] ; Guangxi Science Foundation[2018GXNSFGA281007] |
| Funding Organization | NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation ; NASA through the Fermi Program ; NASA through the Fermi Program ; NASA through the Swift Guest Investigator Program ; NASA through the Swift Guest Investigator Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangxi Science Foundation ; Guangxi Science Foundation |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000544206500009 |
| Publisher | OXFORD UNIV PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/82830 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Zhang, Jin |
| Affiliation | 1.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 4.Yunnan Normal Univ, Dept Phys, Kunming 650500, Yunnan, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Hai-Ming,Wang, Zhen-Jie,Zhang, Jin,et al. Diversity of gamma-ray and radio variability of bright blazars and implications for gamma-ray emission location[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2020,72(3):19. |
| APA | Zhang, Hai-Ming.,Wang, Zhen-Jie.,Zhang, Jin.,Yi, Ting-Feng.,Chen, Liang.,...&Liang, En-Wei.(2020).Diversity of gamma-ray and radio variability of bright blazars and implications for gamma-ray emission location.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,72(3),19. |
| MLA | Zhang, Hai-Ming,et al."Diversity of gamma-ray and radio variability of bright blazars and implications for gamma-ray emission location".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 72.3(2020):19. |
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