Optical and cm follow-ups of the Changing-Look event in Mkn 590
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918385701355520 |
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| author | Palit, Biswaraj Borkar, Abhijeet Różańska, Agata Markowitz, Alex Śniegowska, Marzena Panda, Swayamtrupta Homan, David Iłkiewicz, Krystian |
| author_facet | Palit, Biswaraj Borkar, Abhijeet Różańska, Agata Markowitz, Alex Śniegowska, Marzena Panda, Swayamtrupta Homan, David Iłkiewicz, Krystian |
| contents | The Changing-Look active galactic nucleus Mkn 590 is currently in a rejuvenated state, exhibiting a contemporaneous flux rise across X-rays, UV, optical and cm wavelengths. In this study, we present three new optical spectra obtained with the Nordic Optical Telescope, alongside three 1.4 GHz continuum measurements from the Giant Meterwave Radio Telescope, acquired since Nov. 2024. We identified a clear increase in the broad hydrogen Balmer line emission in the most recent observational epochs. Additionally, the core radio flux densities appear to track the overall X-ray variability, suggesting a possible connection between the accretion flow and jet activity. Based on these data, we aim to explore the evolution of the circumnuclear gas in this source and potential links between accretion and ejection activity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_19660 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optical and cm follow-ups of the Changing-Look event in Mkn 590 Palit, Biswaraj Borkar, Abhijeet Różańska, Agata Markowitz, Alex Śniegowska, Marzena Panda, Swayamtrupta Homan, David Iłkiewicz, Krystian High Energy Astrophysical Phenomena The Changing-Look active galactic nucleus Mkn 590 is currently in a rejuvenated state, exhibiting a contemporaneous flux rise across X-rays, UV, optical and cm wavelengths. In this study, we present three new optical spectra obtained with the Nordic Optical Telescope, alongside three 1.4 GHz continuum measurements from the Giant Meterwave Radio Telescope, acquired since Nov. 2024. We identified a clear increase in the broad hydrogen Balmer line emission in the most recent observational epochs. Additionally, the core radio flux densities appear to track the overall X-ray variability, suggesting a possible connection between the accretion flow and jet activity. Based on these data, we aim to explore the evolution of the circumnuclear gas in this source and potential links between accretion and ejection activity. |
| title | Optical and cm follow-ups of the Changing-Look event in Mkn 590 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2511.19660 |