# Simulating Ellerman bomb-like event

**Authors:** S. Danilovic

arXiv: 1701.02112 · 2017-05-17

## TL;DR

This study uses realistic 3D MHD simulations to investigate Ellerman bombs, confirming their association with hot, dense plasma and flame-like appearance, and elucidating their magnetic reconnection origins in different solar regions.

## Contribution

It demonstrates that 3D MHD simulations can reproduce EB-like phenomena, clarifying their physical mechanisms and dependence on magnetic reconnection and viewing angle.

## Key findings

- EBs coincide with hot, dense plasma as predicted by models.
- Simulated EB features match observed flame-like morphology.
- Reconnection of strong magnetic fields causes EB features.

## Abstract

Ellerman bombs (EBs) seem to be a part of a whole spectrum of phenomena that might have the same underlying physical mechanism, but with observed characteristics which pose a considerable challenge to models. The aim of this study is to investigate whether the proposed mechanism, applied to the circumstances of EBs, produce the observed characteristics. For this, realistic 3D MHD simulations are used. Two different cases are presented: the quiet Sun and an active region. Both runs confirm that EB-like brightenings coincide with hot and dense plasma which is in agreement with predictions of 1D and 2D modellings. The simulated EB-like phenomena assume the observed flame-like form, which depends on the complexity of the ongoing reconnection and the viewing angle. At the layers sampled by H$\alpha$-wings, near temperature minimum and below, the magnetic field topology seem to be always the same. The field lines there trace the base of the current sheet and the reconnected $\cap$-loops. So, the EB features are caused by reconnection of strong-field patches of opposite polarity in the regions where the surface flows are the strongest. The weakest cases among them can be reproduced quantitatively by the current simulations.

## Full text

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## Figures

37 figures with captions in the complete paper: https://tomesphere.com/paper/1701.02112/full.md

## References

45 references — full list in the complete paper: https://tomesphere.com/paper/1701.02112/full.md

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Source: https://tomesphere.com/paper/1701.02112