RADYN simulations of non-thermal and thermal models of Ellerman bombs

Abstract

Ellerman bombs (EBs) are brightenings in the H$\alpha$ line wings that are believed to be caused by magnetic reconnection in the lower atmosphere. To study the response and evolution of the chromospheric line profiles, we perform radiative hydrodynamic simulations of EBs using both non-thermal and thermal models. Overall, these models can generate line profiles that are similar to observations. However, in non-thermal models we find dimming in the H$\alpha$ line wings and continuum when the heating begins, while for the thermal models dimming occurs only in the H$\alpha$ line core, and with a longer lifetime. This difference in line profiles can be used to determine whether an EB is dominated by non-thermal heating or thermal heating. In our simulations, if a higher heating rate is applied, the H$\alpha$ line will be unrealistically strong, while there are still no clear UV burst signatures.

arXiv comment20 pages, 9 figures, accepted for publication in ApJ

References in corpus (35)

• CHIANTI - An atomic database for Emission Lines. Version 8
• Radiative Hydrodynamic Models of the Optical and Ultraviolet Emission from Solar Flares
• Does a Non-Magnetic Solar Chromosphere Exist?
• Hot Explosions in the Cool Atmosphere of the Sun
• The formation of the Halpha line in the solar chromosphere
• Dynamic Hydrogen Ionization
• A Unified Computational Model for Solar and Stellar Flares
• Ellerman Bombs at high resolution: I. Morphological evidence for photospheric reconnection
• Ellerman bombs at high resolution III. Simultaneous observations with IRIS and SST
• Bombs and flares at the surface and lower atmosphere of the Sun
• Radiative Hydrodynamic Models of Optical and Ultraviolet Emission from M Dwarf Flares
• RH 1.5D: a massively parallel code for multi-level radiative transfer with partial frequency redistribution and Zeeman polarisation
• Are IRIS bombs connected to Ellerman bombs?
• Ellerman Bombs at high resolution: II. Visibility, triggering and effect on upper atmosphere
• Ellerman bombs: fallacies, fads, usage
• Spectro-Polarimetric Observation of an Emerging Flux Region: Triggering Mechanism of Ellerman Bombs
• Data-driven Radiative Hydrodynamic Modeling of the 2014 March 29 X1.0 Solar Flare
• Heating mechanisms in the low solar atmosphere through magnetic reconnection in current sheets
• Ellerman Bombs - Evidence for Magnetic Reconnection in the Lower Solar Atmosphere
• Magnetic Flux Cancellation in Ellerman Bombs
• Spectral observations of Ellerman bombs and fitting with a two-cloud model
• Small-Scale Structuring Of Ellerman Bombs at Solar Limb
• Spectro-polarimetric observations and non-LTE Modeling of Ellerman bombs
• Observations and NLTE modeling of Ellerman bombs
• Ultra-narrow Negative Flare Front Observed in Helium-10830~Å using the 1.6 m New Solar Telescope
• Observations of Ellerman bomb emission features in He I D3 and He I 10830 Å
• Ellerman Bombs with Jets: Cause and Effect
• Combined Modeling of Acceleration, Transport, and Hydrodynamic Response in Solar Flares. II. Inclusion of Radiative Transfer with RADYN
• Solar Flare Chromospheric Line Emission: Comparison Between IBIS High-resolution Observations and Radiative Hydrodynamic Simulations
• Photospheric response to EB-like event
• Multi-wavelength Spectral Analysis of Ellerman Bombs Observed by FISS and IRIS
• Solar Ellerman Bombs in 1-D Radiative Hydrodynamics
• Ellerman bombs at high resolution. IV. Visibility in Na I and Mg I
• Diagnostics of Ellerman Bombs with High-resolution Spectral Data
• Can the temperature of Ellerman Bombs be more than 10000K?

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• Signatures of magnetic reconnection at the footpoints of fan shape jets on a light bridge driven by photospheric convective motions
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• Radiative Hydrodynamic Simulations of the Spectral Characteristics of Solar White-light Flares
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