X-ray reverberation in NLS1
Reverberation from scattering material around the black hole in active galactic nuclei is expected to produce a characteristic signature in a Fourier analysis of the time delays between directly-viewed continuum emission and the scattered light. Narrow-line Seyfert 1 galaxies (NLS1) are highly varia...
| Main Authors: | , |
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| Format: | Journal article |
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2011
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| _version_ | 1797106185960161280 |
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| author | Miller, L Turner, T |
| author_facet | Miller, L Turner, T |
| author_sort | Miller, L |
| collection | OXFORD |
| description | Reverberation from scattering material around the black hole in active galactic nuclei is expected to produce a characteristic signature in a Fourier analysis of the time delays between directly-viewed continuum emission and the scattered light. Narrow-line Seyfert 1 galaxies (NLS1) are highly variable at X-ray energies, and are ideal candidates for the detection of X-ray reverberation. We show new analysis of a small sample of NLS1 that clearly shows the expected time-delay signature, providing strong evidence for the existence of a high covering fraction of scattering and absorbing material a few tens to hundreds of gravitational radii from the black hole. We also show that an alternative interpretation of time delays in the NLS1 1H0707-495, as arising about one gravitational radius from the black hole, is strongly disfavoured in an analysis of the energy-dependence of the time delays. |
| first_indexed | 2024-03-07T06:58:09Z |
| format | Journal article |
| id | oxford-uuid:fed68f3e-5da6-421b-8d3c-2c4f6bde3eea |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:58:09Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:fed68f3e-5da6-421b-8d3c-2c4f6bde3eea2022-03-27T13:39:40ZX-ray reverberation in NLS1Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fed68f3e-5da6-421b-8d3c-2c4f6bde3eeaSymplectic Elements at Oxford2011Miller, LTurner, TReverberation from scattering material around the black hole in active galactic nuclei is expected to produce a characteristic signature in a Fourier analysis of the time delays between directly-viewed continuum emission and the scattered light. Narrow-line Seyfert 1 galaxies (NLS1) are highly variable at X-ray energies, and are ideal candidates for the detection of X-ray reverberation. We show new analysis of a small sample of NLS1 that clearly shows the expected time-delay signature, providing strong evidence for the existence of a high covering fraction of scattering and absorbing material a few tens to hundreds of gravitational radii from the black hole. We also show that an alternative interpretation of time delays in the NLS1 1H0707-495, as arising about one gravitational radius from the black hole, is strongly disfavoured in an analysis of the energy-dependence of the time delays. |
| spellingShingle | Miller, L Turner, T X-ray reverberation in NLS1 |
| title | X-ray reverberation in NLS1 |
| title_full | X-ray reverberation in NLS1 |
| title_fullStr | X-ray reverberation in NLS1 |
| title_full_unstemmed | X-ray reverberation in NLS1 |
| title_short | X-ray reverberation in NLS1 |
| title_sort | x ray reverberation in nls1 |
| work_keys_str_mv | AT millerl xrayreverberationinnls1 AT turnert xrayreverberationinnls1 |