Hybrid Black Hole and Disk-Driven Jets: Steady Axisymmetric Ideal MHD Modeling
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866912886338617344 |
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| author | Song, Yu Hou, Yehui Huang, Lei Chen, Bin |
| author_facet | Song, Yu Hou, Yehui Huang, Lei Chen, Bin |
| contents | Improved observational precision in relativistic jets has underscored the need for tractable theoretical models. In this study, we construct a semi-analytical hybrid jet model that incorporates both black hole-driven and disk-driven components within the framework of steady, axisymmetric, ideal MHD. We derive a condition that determines the launching sites of cold outflows, introducing a new constraint on the magnetic field configuration threading the accretion disk. Using the Bernoulli equation and critical point analysis, we derive flow solutions along various magnetic field lines. Our hybrid jet model shows that discontinuities in field-line angular velocity lead to clear velocity shear and density jumps at the interface between the two jet components. These features are accompanied by localized enhancements in velocity and density, potentially explaining the observed limb-brightening. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_23281 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hybrid Black Hole and Disk-Driven Jets: Steady Axisymmetric Ideal MHD Modeling Song, Yu Hou, Yehui Huang, Lei Chen, Bin High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Improved observational precision in relativistic jets has underscored the need for tractable theoretical models. In this study, we construct a semi-analytical hybrid jet model that incorporates both black hole-driven and disk-driven components within the framework of steady, axisymmetric, ideal MHD. We derive a condition that determines the launching sites of cold outflows, introducing a new constraint on the magnetic field configuration threading the accretion disk. Using the Bernoulli equation and critical point analysis, we derive flow solutions along various magnetic field lines. Our hybrid jet model shows that discontinuities in field-line angular velocity lead to clear velocity shear and density jumps at the interface between the two jet components. These features are accompanied by localized enhancements in velocity and density, potentially explaining the observed limb-brightening. |
| title | Hybrid Black Hole and Disk-Driven Jets: Steady Axisymmetric Ideal MHD Modeling |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2507.23281 |