A model for line absorption and emission from turbulent mixing layers

نویسندگان

چکیده

ABSTRACT Turbulent mixing layers (TMLs) are ubiquitous in multiphase gas. They can potentially explain observations of high ions such as O vi, which have significant observed column densities despite short cooling times. Previously, we showed that global mass, momentum, and energy transfer between phases mediated by TMLs is not sensitive to details thermal conduction or numerical resolution. By contrast, show here observables temperature distributions, densities, line ratios considerations. We the reason for this difference. develop a prescription applying simple 1D conductive-cooling front model quantitatively reproduces 3D hydrodynamic simulation results ratios, even when TML has complex fractal structure. This enables subgrid absorption emission predictions large scale simulations. The predicted good agreement with observations, while require numerous be pierced along sight.

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ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters

سال: 2021

ISSN: ['1745-3925', '1745-3933']

DOI: https://doi.org/10.1093/mnrasl/slab100