Modeling the Multiwavelength Emission of 3C 279 during the 14 yr Fermi-LAT Era
文献类型：期刊论文
| 作者 | Mohana, A. Krishna1,10,11; Gupta, Alok C.10,11; Fan, Junhui1,2,12; Sahakyan, Narek4,5,14; Raiteri, Claudia M.6; Cui, Lang3,7,10; Lahteenmaki, Anne8,9; Gurwell, Mark13; Tornikoski, Merja8; Villata, Massimo6 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2025-08-10 |
| 卷号 | 989期号:1页码:125 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/adec77 |
| 产权排序 | 1 |
| 英文摘要 | We report the results of our long-term multiwavelength spectral energy distribution (SED) study on the flat-spectrum radio quasar 3C 279 during the similar to 14 yr (2008-2022) Fermi-Large Area Telescope (LAT) observing period. The Fermi-LAT data were complemented with data in other wave bands obtained from the Swift-X-Ray Telescope (XRT)/UVOT, the Whole Earth Blazar Telescope, along with other optical and radio data from several observatories. Different activity states were identified from the weekly binned gamma-ray light curve, and it was possible to create 168 high-quality and quasi-simultaneous broadband SEDs. We modeled the SEDs using a one-zone leptonic scenario, including the emission region outside the broad-line region (BLR), involving synchrotron, synchrotron self-Compton, and external Compton mechanisms. Such extensive broadband modeling is essential for constraining the underlying multiwavelength radiative mechanisms in the 3C 279 jet and permits the estimation of the physical parameters and exploration of their evolution in time. Our SED modeling study suggests that the increase in the Doppler beaming factor, along with the variation of the emitting electrons, is the cause for the flares in this source. The multiwavelength emission of 3C 279 was found to be well explained by the scenario in which the emission region is outside the BLR at a distance of similar to 6.42 x 103RS. However, for two of the very bright gamma-ray states, the emission region was found to be close to the outer boundary of the BLR at a distance of similar to 1.28 x 103RS from the central black hole. |
| WOS关键词 | GAMMA-RAY FLARE ; LARGE-AREA TELESCOPE ; SPECTRAL ENERGY-DISTRIBUTIONS ; BROAD-BAND EMISSION ; BL LACERTAE OBJECTS ; X-RAY ; RELATIVISTIC JETS ; LIGHT CURVES ; COMPTON-SCATTERING ; AMBIENT RADIATION |
| 资助项目 | CAS Light of West China Program[2021-XBQNXZ-005] ; National SKA Program of China[2022SKA0120102] ; Tianshan Talent Training Program[2023TSYCCX0099] ; ARIES Regular Post-Doctoral Fellowship[AO/RA/2022/1960] ; National Science Foundation of China[NSFC 12433004] ; National Science Foundation of China[U2031201] ; National Science Foundation of China[NSFC 11733001] ; INAF Fundamental Research Funding Call ; Higher Education and Science Committee of the Republic of Armenia[23LCG-1C004] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001563371300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | CAS Light of West China Program ; National SKA Program of China ; Tianshan Talent Training Program ; ARIES Regular Post-Doctoral Fellowship ; National Science Foundation of China ; INAF Fundamental Research Funding Call ; Higher Education and Science Committee of the Republic of Armenia |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8095]  |
| 专题 | 星系宇宙学研究团组 |
| 通讯作者 | Mohana, A. Krishna; Gupta, Alok C.; Cui, Lang |
| 作者单位 | 1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China 2.Natl Astron Data Ctr, Greater Bay Brand Ctr, Guangzhou 510006, Peoples R China 3.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China 4.ICRANet, Piazza Repubbl 10, I-65122 Pescara, Italy 5.Sapienza Univ Roma, Dipartimento Fis, ICRA, Ple Aldo Moro 5, I-00185 Rome, Italy 6.INAF, Osservatorio Astrofisico Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy 7.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China 8.Aalto Univ, Metsahovi Radio Observ, Metsahovintie 114, Kylmala 02540, Finland 9.Aalto Univ, Dept Elect & Nanoengn, POB 15500, FI-00076 Aalto, Finland 10.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mohana, A. Krishna,Gupta, Alok C.,Fan, Junhui,et al. Modeling the Multiwavelength Emission of 3C 279 during the 14 yr Fermi-LAT Era[J]. ASTROPHYSICAL JOURNAL,2025,989(1):125. |
| APA | Mohana, A. Krishna.,Gupta, Alok C..,Fan, Junhui.,Sahakyan, Narek.,Raiteri, Claudia M..,...&Villata, Massimo.(2025).Modeling the Multiwavelength Emission of 3C 279 during the 14 yr Fermi-LAT Era.ASTROPHYSICAL JOURNAL,989(1),125. |
| MLA | Mohana, A. Krishna,et al."Modeling the Multiwavelength Emission of 3C 279 during the 14 yr Fermi-LAT Era".ASTROPHYSICAL JOURNAL 989.1(2025):125. |
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