X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81*
Most active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets. The association of radio and X-ray flares with the knot ejection fro...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acd16d |
| _version_ | 1827827043535945728 |
|---|---|
| author | Gunjan Tomar Nayantara Gupta |
| author_facet | Gunjan Tomar Nayantara Gupta |
| author_sort | Gunjan Tomar |
| collection | DOAJ |
| description | Most active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets. The association of radio and X-ray flares with the knot ejection from M81* inspires us to model its multiwavelength spectral energy distribution (SED) during these flares to constrain the physical parameters of the jet. Moreover, we construct a long-term light curve in X-rays to identify the flares in the available data and constrain the jet parameters during those periods. The jet activity may vary on short as well as long timescales, which may produce flares in different frequency bands. The SEDs from radio to X-ray during the quiescent as well as flaring states are found to be satisfactorily explained by synchrotron emission of relativistic electrons from a single zone. The variation in the values of the jet parameters during the different states is shown and compared with high-synchrotron peaked blazars. |
| first_indexed | 2024-03-12T03:21:10Z |
| format | Article |
| id | doaj.art-8e7e94636dc6426d81932189cd79e937 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:21:10Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-8e7e94636dc6426d81932189cd79e9372023-09-03T13:58:43ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01950211310.3847/1538-4357/acd16dX-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81*Gunjan Tomar0https://orcid.org/0000-0003-4992-6827Nayantara Gupta1https://orcid.org/0000-0002-1188-7503Astronomy & Astrophysics group, Raman Research Institute , C.V. Raman Avenue, 5th Cross Road, Sadashivanagar, Bengaluru 560080, Karnataka, India gunjan@rri.res.inAstronomy & Astrophysics group, Raman Research Institute , C.V. Raman Avenue, 5th Cross Road, Sadashivanagar, Bengaluru 560080, Karnataka, India gunjan@rri.res.inMost active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets. The association of radio and X-ray flares with the knot ejection from M81* inspires us to model its multiwavelength spectral energy distribution (SED) during these flares to constrain the physical parameters of the jet. Moreover, we construct a long-term light curve in X-rays to identify the flares in the available data and constrain the jet parameters during those periods. The jet activity may vary on short as well as long timescales, which may produce flares in different frequency bands. The SEDs from radio to X-ray during the quiescent as well as flaring states are found to be satisfactorily explained by synchrotron emission of relativistic electrons from a single zone. The variation in the values of the jet parameters during the different states is shown and compared with high-synchrotron peaked blazars.https://doi.org/10.3847/1538-4357/acd16dSpectral energy distributionLow-luminosity active galactic nucleiX-ray active galactic nuclei |
| spellingShingle | Gunjan Tomar Nayantara Gupta X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* The Astrophysical Journal Spectral energy distribution Low-luminosity active galactic nuclei X-ray active galactic nuclei |
| title | X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* |
| title_full | X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* |
| title_fullStr | X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* |
| title_full_unstemmed | X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* |
| title_short | X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* |
| title_sort | x ray flares in the long term light curve of low luminosity active galactic nucleus m81 |
| topic | Spectral energy distribution Low-luminosity active galactic nuclei X-ray active galactic nuclei |
| url | https://doi.org/10.3847/1538-4357/acd16d |
| work_keys_str_mv | AT gunjantomar xrayflaresinthelongtermlightcurveoflowluminosityactivegalacticnucleusm81 AT nayantaragupta xrayflaresinthelongtermlightcurveoflowluminosityactivegalacticnucleusm81 |