Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1
The multiwavelength emissions, especially gamma-rays, of active galactic nuclei (AGNs) are essential for studying the physical properties of jets emanating from supermassive black holes at galaxy centers. However, for high-redshift AGNs, it is challenging to identify their gamma-ray emissions due to...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ad968d |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846113547565662208 |
|---|---|
| author | Hai-Qin Wang Fang-Kun Peng Rui Xue Lu-Ming Sun |
| author_facet | Hai-Qin Wang Fang-Kun Peng Rui Xue Lu-Ming Sun |
| author_sort | Hai-Qin Wang |
| collection | DOAJ |
| description | The multiwavelength emissions, especially gamma-rays, of active galactic nuclei (AGNs) are essential for studying the physical properties of jets emanating from supermassive black holes at galaxy centers. However, for high-redshift AGNs, it is challenging to identify their gamma-ray emissions due to limited angular resolution of gamma-ray instruments. In this work, using the infrared light curves of the Wide-field Infrared Survey Explorer (WISE) and spectral measurements through Sloan Digital Sky Survey DR16 quasar observations, we assemble 64 mid-infrared flares with redshift z > 1 as the sample. Based on the Fermi-Large Area Telescope survey data, we search for gamma-ray emission from the 64 WISE sources. New quasi-simultaneous gamma-ray emissions are detected for five sample sources when their infrared emissions are at a flare state, and the infrared positions fall into the error bars of their best-fit gamma-ray positions, as well. We collect the optical data and historical data to perform a spectral energy distribution (SED) analysis. To investigate the multiband characteristics of these five gamma-ray AGNs at flare and quiescent states, a one-zone leptonic model is applied to reproduce their averaged SEDs. |
| format | Article |
| id | doaj-art-0030d60f6230431e9ffa1e38884d73a5 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-0030d60f6230431e9ffa1e38884d73a52024-12-21T05:20:31ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-019781210.3847/1538-4357/ad968dMultiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1Hai-Qin Wang0Fang-Kun Peng1https://orcid.org/0000-0001-7171-5132Rui Xue2https://orcid.org/0000-0003-1721-151XLu-Ming Sun3https://orcid.org/0000-0002-7223-5840Department of Physics, Anhui Normal University , Wuhu 241002, People's Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu 241002, People's Republic of ChinaDepartment of Physics, Zhejiang Normal University , Jinhua 321004, People's Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu 241002, People's Republic of ChinaThe multiwavelength emissions, especially gamma-rays, of active galactic nuclei (AGNs) are essential for studying the physical properties of jets emanating from supermassive black holes at galaxy centers. However, for high-redshift AGNs, it is challenging to identify their gamma-ray emissions due to limited angular resolution of gamma-ray instruments. In this work, using the infrared light curves of the Wide-field Infrared Survey Explorer (WISE) and spectral measurements through Sloan Digital Sky Survey DR16 quasar observations, we assemble 64 mid-infrared flares with redshift z > 1 as the sample. Based on the Fermi-Large Area Telescope survey data, we search for gamma-ray emission from the 64 WISE sources. New quasi-simultaneous gamma-ray emissions are detected for five sample sources when their infrared emissions are at a flare state, and the infrared positions fall into the error bars of their best-fit gamma-ray positions, as well. We collect the optical data and historical data to perform a spectral energy distribution (SED) analysis. To investigate the multiband characteristics of these five gamma-ray AGNs at flare and quiescent states, a one-zone leptonic model is applied to reproduce their averaged SEDs.https://doi.org/10.3847/1538-4357/ad968dRelativistic jetsSpectral energy distributionBlazarsGamma-rays |
| spellingShingle | Hai-Qin Wang Fang-Kun Peng Rui Xue Lu-Ming Sun Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 The Astrophysical Journal Relativistic jets Spectral energy distribution Blazars Gamma-rays |
| title | Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 |
| title_full | Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 |
| title_fullStr | Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 |
| title_full_unstemmed | Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 |
| title_short | Multiwavelength Study of Five Distant Transient Gamma-Ray AGNs with z > 1 |
| title_sort | multiwavelength study of five distant transient gamma ray agns with z 1 |
| topic | Relativistic jets Spectral energy distribution Blazars Gamma-rays |
| url | https://doi.org/10.3847/1538-4357/ad968d |
| work_keys_str_mv | AT haiqinwang multiwavelengthstudyoffivedistanttransientgammarayagnswithz1 AT fangkunpeng multiwavelengthstudyoffivedistanttransientgammarayagnswithz1 AT ruixue multiwavelengthstudyoffivedistanttransientgammarayagnswithz1 AT lumingsun multiwavelengthstudyoffivedistanttransientgammarayagnswithz1 |