General Physical Properties of Fermi Blazars
We study the general physical properties of Fermi blazars using the Fermi fourth source catalog data (4FGL-DR2). The quasi-simultaneous multiwavelength data of Fermi blazars are fitted by using the one-zone leptonic model to obtain some physical parameters, such as jet power, magnetic field, and Dop...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal Supplement Series |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4365/ace444 |
| _version_ | 1797696999126990848 |
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| author | Yongyun Chen Qiusheng Gu Junhui Fan Xiaoling Yu Xiaogu Zhong Hongyu Liu Nan Ding Dingrong Xiong Xiaotong Guo |
| author_facet | Yongyun Chen Qiusheng Gu Junhui Fan Xiaoling Yu Xiaogu Zhong Hongyu Liu Nan Ding Dingrong Xiong Xiaotong Guo |
| author_sort | Yongyun Chen |
| collection | DOAJ |
| description | We study the general physical properties of Fermi blazars using the Fermi fourth source catalog data (4FGL-DR2). The quasi-simultaneous multiwavelength data of Fermi blazars are fitted by using the one-zone leptonic model to obtain some physical parameters, such as jet power, magnetic field, and Doppler factor. We study the distributions of the derived physical parameters as a function of black hole mass and accretion disk luminosity. The main results are as follows. (1) For a standard thin accretion disk, the jet kinetic power of most flat-spectrum radio quasars can be explained by the Blandford–Payne (BP) mechanism. However, the jet kinetic power of most BL Lacertae objects (BL Lacs) cannot be explained by either the Blandford–Znajek mechanism or the BP mechanism. The BL Lacs may have advection-dominated accretion flows surrounding their massive black holes. (2) After excluding the redshift, there is a moderately strong correlation between the jet kinetic power and jet radiation power and the accretion disk luminosity for Fermi blazars. These results confirm a close connection between jet and accretion. The jet kinetic power is slightly larger than the accretion disk luminosity for Fermi blazars. (3) There is a significant correlation between jet kinetic power and gamma-ray luminosity and radio luminosity for Fermi blazars, which suggests that gamma-ray luminosity and radio luminosity can be used to indicate the jet kinetic power. |
| first_indexed | 2024-03-12T03:34:03Z |
| format | Article |
| id | doaj.art-bceeaa3a75b747e59b315f71bbcd6cff |
| institution | Directory Open Access Journal |
| issn | 0067-0049 |
| language | English |
| last_indexed | 2024-03-12T03:34:03Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj.art-bceeaa3a75b747e59b315f71bbcd6cff2023-09-03T13:23:50ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492023-01-012681610.3847/1538-4365/ace444General Physical Properties of Fermi BlazarsYongyun Chen0https://orcid.org/0000-0001-5895-0189Qiusheng Gu1Junhui Fan2https://orcid.org/0000-0002-5929-0968Xiaoling Yu3Xiaogu Zhong4Hongyu Liu5Nan Ding6https://orcid.org/0000-0003-1028-8733Dingrong Xiong7https://orcid.org/0000-0002-6809-9575Xiaotong Guo8College of Physics and Electronic Engineering, Qujing Normal University , Qujing 655011, People's Republic of China ; ynkmcyy@yeah.netSchool of Astronomy and Space Science, Nanjing University , Nanjing 210093, People's Republic of China ; qsgu@nju.edu.cnCenter for Astrophysics, Guangzhou University , Guangzhou 510006, People's Republic of ChinaCollege of Physics and Electronic Engineering, Qujing Normal University , Qujing 655011, People's Republic of China ; ynkmcyy@yeah.netCollege of Physics and Electronic Engineering, Qujing Normal University , Qujing 655011, People's Republic of China ; ynkmcyy@yeah.netCollege of Physics and Electronic Engineering, Qujing Normal University , Qujing 655011, People's Republic of China ; ynkmcyy@yeah.netSchool of Physical Science and Technology, Kunming University , 650214, People's Republic of ChinaYunnan Observatories, Chinese Academy of Sciences , Kunming 650011, People's Republic of ChinaAnqing Normal University , 246133, People's Republic of ChinaWe study the general physical properties of Fermi blazars using the Fermi fourth source catalog data (4FGL-DR2). The quasi-simultaneous multiwavelength data of Fermi blazars are fitted by using the one-zone leptonic model to obtain some physical parameters, such as jet power, magnetic field, and Doppler factor. We study the distributions of the derived physical parameters as a function of black hole mass and accretion disk luminosity. The main results are as follows. (1) For a standard thin accretion disk, the jet kinetic power of most flat-spectrum radio quasars can be explained by the Blandford–Payne (BP) mechanism. However, the jet kinetic power of most BL Lacertae objects (BL Lacs) cannot be explained by either the Blandford–Znajek mechanism or the BP mechanism. The BL Lacs may have advection-dominated accretion flows surrounding their massive black holes. (2) After excluding the redshift, there is a moderately strong correlation between the jet kinetic power and jet radiation power and the accretion disk luminosity for Fermi blazars. These results confirm a close connection between jet and accretion. The jet kinetic power is slightly larger than the accretion disk luminosity for Fermi blazars. (3) There is a significant correlation between jet kinetic power and gamma-ray luminosity and radio luminosity for Fermi blazars, which suggests that gamma-ray luminosity and radio luminosity can be used to indicate the jet kinetic power.https://doi.org/10.3847/1538-4365/ace444Active galactic nucleiGamma-raysGamma-ray sourcesBL Lacertae objectsFlat-spectrum radio quasarsJets |
| spellingShingle | Yongyun Chen Qiusheng Gu Junhui Fan Xiaoling Yu Xiaogu Zhong Hongyu Liu Nan Ding Dingrong Xiong Xiaotong Guo General Physical Properties of Fermi Blazars The Astrophysical Journal Supplement Series Active galactic nuclei Gamma-rays Gamma-ray sources BL Lacertae objects Flat-spectrum radio quasars Jets |
| title | General Physical Properties of Fermi Blazars |
| title_full | General Physical Properties of Fermi Blazars |
| title_fullStr | General Physical Properties of Fermi Blazars |
| title_full_unstemmed | General Physical Properties of Fermi Blazars |
| title_short | General Physical Properties of Fermi Blazars |
| title_sort | general physical properties of fermi blazars |
| topic | Active galactic nuclei Gamma-rays Gamma-ray sources BL Lacertae objects Flat-spectrum radio quasars Jets |
| url | https://doi.org/10.3847/1538-4365/ace444 |
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