The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866929675841830912 |
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| author | Everson, Rosa Wallace MacLeod, Morgan Ramirez-Ruiz, Enrico |
| author_facet | Everson, Rosa Wallace MacLeod, Morgan Ramirez-Ruiz, Enrico |
| contents | We propose a new predictive theory for the analysis of common envelope (CE) events which incorporates the effects of relevant hydrodynamical processes into a simple analytical framework. We introduce the ejection and dynamical parameters $ξ$ and $β$, which define if envelope ejection is energetically or hydrodynamically favorable, respectively, during CE inspiral. When combined, these parameters offer a detailed narrative of how inspiral begins, proceeds, and ends that is consistent with preliminary comparisons to 3D hydrodynamical models. This physically-motivated framework impacts predictions for CE outcomes, especially for systems that have energy excess, and offers promise as a potential alternative for the treatment of CE in binary population synthesis. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_07036 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics Everson, Rosa Wallace MacLeod, Morgan Ramirez-Ruiz, Enrico High Energy Astrophysical Phenomena Solar and Stellar Astrophysics High Energy Physics - Phenomenology We propose a new predictive theory for the analysis of common envelope (CE) events which incorporates the effects of relevant hydrodynamical processes into a simple analytical framework. We introduce the ejection and dynamical parameters $ξ$ and $β$, which define if envelope ejection is energetically or hydrodynamically favorable, respectively, during CE inspiral. When combined, these parameters offer a detailed narrative of how inspiral begins, proceeds, and ends that is consistent with preliminary comparisons to 3D hydrodynamical models. This physically-motivated framework impacts predictions for CE outcomes, especially for systems that have energy excess, and offers promise as a potential alternative for the treatment of CE in binary population synthesis. |
| title | The Energy Sharing Timescale in an Analytic Framework for Common Envelope Hydrodynamics |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.07036 |