An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra
We comprehensively model the X-ray luminosity emergent from time-dependent relativistic accretion discs, developing analytical models of the X-ray luminosity of thermal disc systems as a function of black hole mass M, disc mass Md, and disc α-parameter. The X-ray properties of these solutions will b...
| Main Authors: | , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado: |
Oxford University Press
2021
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| _version_ | 1826277906929680384 |
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| author | Mummery, A Balbus, SA |
| author_facet | Mummery, A Balbus, SA |
| author_sort | Mummery, A |
| collection | OXFORD |
| description | We comprehensively model the X-ray luminosity emergent from time-dependent relativistic accretion discs, developing analytical models of the X-ray luminosity of thermal disc systems as a function of black hole mass M, disc mass Md, and disc α-parameter. The X-ray properties of these solutions will be directly relevant for understanding tidal disruption event (TDE) observations. We demonstrate an extremely strong suppression of thermal X-ray luminosity from large mass black holes, LX ∼ exp (− m7/6), where m is a dimensionless mass, roughly the black hole mass in unity of 106M⊙. This strong suppression results in upper observable black hole mass limits, which we demonstrate to be of order Mlim ≃ 3 × 107M⊙, above which thermal X-ray emission will not be observable. This upper observable black hole mass limit is a function of the remaining disc parameters, and the full dependence can be described analytically (equation 82). We demonstrate that the current population of observed X-ray TDEs is indeed consistent with an upper black hole mass limit of order M ∼ 107M⊙, consistent with our analysis. |
| first_indexed | 2024-03-06T23:35:57Z |
| format | Journal article |
| id | oxford-uuid:6da8b7a0-a3e6-42a1-9c41-06d77cb442e2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:35:57Z |
| publishDate | 2021 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:6da8b7a0-a3e6-42a1-9c41-06d77cb442e22022-03-26T19:19:16ZAn upper observable black hole mass scale for tidal destruction events with thermal X-ray spectraJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6da8b7a0-a3e6-42a1-9c41-06d77cb442e2EnglishSymplectic ElementsOxford University Press2021Mummery, ABalbus, SAWe comprehensively model the X-ray luminosity emergent from time-dependent relativistic accretion discs, developing analytical models of the X-ray luminosity of thermal disc systems as a function of black hole mass M, disc mass Md, and disc α-parameter. The X-ray properties of these solutions will be directly relevant for understanding tidal disruption event (TDE) observations. We demonstrate an extremely strong suppression of thermal X-ray luminosity from large mass black holes, LX ∼ exp (− m7/6), where m is a dimensionless mass, roughly the black hole mass in unity of 106M⊙. This strong suppression results in upper observable black hole mass limits, which we demonstrate to be of order Mlim ≃ 3 × 107M⊙, above which thermal X-ray emission will not be observable. This upper observable black hole mass limit is a function of the remaining disc parameters, and the full dependence can be described analytically (equation 82). We demonstrate that the current population of observed X-ray TDEs is indeed consistent with an upper black hole mass limit of order M ∼ 107M⊙, consistent with our analysis. |
| spellingShingle | Mummery, A Balbus, SA An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title | An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title_full | An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title_fullStr | An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title_full_unstemmed | An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title_short | An upper observable black hole mass scale for tidal destruction events with thermal X-ray spectra |
| title_sort | upper observable black hole mass scale for tidal destruction events with thermal x ray spectra |
| work_keys_str_mv | AT mummerya anupperobservableblackholemassscalefortidaldestructioneventswiththermalxrayspectra AT balbussa anupperobservableblackholemassscalefortidaldestructioneventswiththermalxrayspectra AT mummerya upperobservableblackholemassscalefortidaldestructioneventswiththermalxrayspectra AT balbussa upperobservableblackholemassscalefortidaldestructioneventswiththermalxrayspectra |