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- W3102808515 endingPage "101" @default.
- W3102808515 startingPage "101" @default.
- W3102808515 abstract "Alfv'enic waves have been proposed as an important energy transport mechanism in coronal loops, capable of delivering energy to both the corona and chromosphere and giving rise to many observed features, of flaring and quiescent regions. In previous work, we established that resistive dissipation of waves (ambipolar diffusion) can drive strong chromospheric heating and evaporation, capable of producing flaring signatures. However, that model was based on a simplified assumption that the waves propagate instantly to the chromosphere, an assumption which the current work removes. Via a ray tracing method, we have implemented traveling waves in a field-aligned hydrodynamic simulation that dissipate locally as they propagate along the field line. We compare this method to and validate against the magnetohydrodynamics code Lare3D. We then examine the importance of travel times to the dynamics of the loop evolution, finding that (1) the ionization level of the plasma plays a critical role in determining the location and rate at which waves dissipate; (2) long duration waves effectively bore a hole into the chromosphere, allowing subsequent waves to penetrate deeper than previously expected, unlike an electron beam whose energy deposition rises in height as evaporation reduces the mean-free paths of the electrons; (3) the dissipation of these waves drives a pressure front that propagates to deeper depths, unlike energy deposition by an electron beam." @default.
- W3102808515 created "2020-11-23" @default.
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- W3102808515 creator A5052124602 @default.
- W3102808515 date "2018-01-26" @default.
- W3102808515 modified "2023-10-09" @default.
- W3102808515 title "A Hydrodynamic Model of Alfvénic Wave Heating in a Coronal Loop and Its Chromospheric Footpoints" @default.
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- W3102808515 doi "https://doi.org/10.3847/1538-4357/aaa2fe" @default.
- W3102808515 hasPublicationYear "2018" @default.
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