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Multi-wavelength Variability Properties of CGRaBS J0733+0456: Identifying a Distant Gamma-Ray Blazar at z?=?3.01
Liao,Neng-Hui1,2; Dou,Li-Ming3; Jiang,Ning4; Wang,Yi-Bo4; Fan,Yi-Zhong2; Wang,Ting-Gui4
2019-07-01
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume879Issue:1
AbstractAbstract We report on Owens Valley Radio Observatory (OVRO), WISE, Swift and Fermi-LAT observations of the high redshift blazar CGRaBS J0733+0456, from which significant flux variations in radio and infrared (IR), as well as γ-ray domains, are detected. Particularly, the amplitude of long-term IR variation is over one order of magnitude, and the IR variability timescale can be constrained as short as a few hours in the source frame. The IR and γ-ray light curves are found to be rather similar, and the strong quasi-simultaneous IR and γ-ray flares are proven to be unique among the nearby γ-ray sources. This is the first time that a γ-ray blazar at redshift z?≥?3 with multi-wavelength flux variations (flares) is identified. Broadband spectral energy distributions in different flux states are constructed and theoretically described. The γ-ray flares from some blazars as distant as redshift ~5 are expected to be detectable for Fermi-LAT.
Keywordgalaxies: active galaxies: high-redshift galaxies: jets gamma rays: galaxies quasars: individual (CGRaBS J0733+0456)
DOI10.3847/2041-8213/ab2893
Language英语
WOS IDIOP:2041-8205-879-1-ab2893
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27491
Collection中国科学院紫金山天文台
Affiliation1.Department of Physics and Astronomy, College of Physics, Guizhou University, Guiyang 550025, People’s Republic of China; nhliao@gzu.edu.cn
2.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, People’s Republic of China
3.Center for Astrophysics, School of Physics and Electronic Engineering, Guangzhou University, Guang Zhou 510006, People’s Republic of China
4.Key laboratory for Research in Galaxies and Cosmology, Department of Astronomy, The University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, People’s Republic of China; twang@ustc.edu.cn
Recommended Citation
GB/T 7714
Liao,Neng-Hui,Dou,Li-Ming,Jiang,Ning,et al. Multi-wavelength Variability Properties of CGRaBS J0733+0456: Identifying a Distant Gamma-Ray Blazar at z?=?3.01[J]. The Astrophysical Journal Letters,2019,879(1).
APA Liao,Neng-Hui,Dou,Li-Ming,Jiang,Ning,Wang,Yi-Bo,Fan,Yi-Zhong,&Wang,Ting-Gui.(2019).Multi-wavelength Variability Properties of CGRaBS J0733+0456: Identifying a Distant Gamma-Ray Blazar at z?=?3.01.The Astrophysical Journal Letters,879(1).
MLA Liao,Neng-Hui,et al."Multi-wavelength Variability Properties of CGRaBS J0733+0456: Identifying a Distant Gamma-Ray Blazar at z?=?3.01".The Astrophysical Journal Letters 879.1(2019).
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