Comparing X-ray Emission Line Fluxes of NGC 5548 to NGC 1068
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912541528031232 |
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| author | Patel, Divya Dehghanian, Maryam Ferland, Gary |
| author_facet | Patel, Divya Dehghanian, Maryam Ferland, Gary |
| contents | The Unification Model of AGN suggests that all AGN galaxies should exhibit similar line ratios in their spectra. NGC 5548, a Seyfert I, underwent obscuration -- similar to naturally obscured Seyfert II galaxies -- due to an outflowing accretion wind, resulting in absorption. As per the Model, a Seyfert I and a Seyfert II should show similar flux ratios during their respective obscuration states. In this note, we present a comparison of emission fluxes between NGC 5548 and NGC 1068, a Seyfert II. We present the CLOUDY prediction of NGC 5548, which underpredicts the line ratios compared to observations, likely due to SED choices. The differing observed line ratios of NGC 5548 and NGC 1068 suggest additional unknown factors in the unification model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_13001 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Comparing X-ray Emission Line Fluxes of NGC 5548 to NGC 1068 Patel, Divya Dehghanian, Maryam Ferland, Gary Astrophysics of Galaxies The Unification Model of AGN suggests that all AGN galaxies should exhibit similar line ratios in their spectra. NGC 5548, a Seyfert I, underwent obscuration -- similar to naturally obscured Seyfert II galaxies -- due to an outflowing accretion wind, resulting in absorption. As per the Model, a Seyfert I and a Seyfert II should show similar flux ratios during their respective obscuration states. In this note, we present a comparison of emission fluxes between NGC 5548 and NGC 1068, a Seyfert II. We present the CLOUDY prediction of NGC 5548, which underpredicts the line ratios compared to observations, likely due to SED choices. The differing observed line ratios of NGC 5548 and NGC 1068 suggest additional unknown factors in the unification model. |
| title | Comparing X-ray Emission Line Fluxes of NGC 5548 to NGC 1068 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2508.13001 |