Systematic 2.5 D resistive MHD simulations with ambipolar diffusion and Hall effect for fast magnetic reconnection
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| Format: | Preprint |
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2024
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| _version_ | 1866929533569990656 |
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| author | Landinez, Gabriela Lora-Clavijo, Fabio D. |
| author_facet | Landinez, Gabriela Lora-Clavijo, Fabio D. |
| contents | In this work, we explore the possibility of the Hall effect and ambipolar diffusion as a mechanism for fast reconnection. The reconnected flux of our resistive and resistive+Hall simulations replicates the GEM results. Furthermore, we investigate, for the first time, the effect of ambipolar diffusion in the GEM. The reconnected flux of the resistive+ambipolar and resistive+Hall+ambipolar simulations showed increases of up to 75\% and 143\%, respectively, compared to the resistive and resistive+Hall simulations, showing that ambipolar diffusion contributes significantly to the reconnected flux. Our second scenario has a magnetic Harris field without perturbations but with an out-of-plane component, known as a guide field. We found that the reconnection rate increased faster with ambipolar diffusion, reaching values close to 0.1 for the resistive+Hall+ambipolar simulation followed by the resistive+Hall. These two simulations achieved the highest kinetic energy, implying more efficient energy conversion during reconnection. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_06391 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Systematic 2.5 D resistive MHD simulations with ambipolar diffusion and Hall effect for fast magnetic reconnection Landinez, Gabriela Lora-Clavijo, Fabio D. Solar and Stellar Astrophysics General Relativity and Quantum Cosmology Plasma Physics In this work, we explore the possibility of the Hall effect and ambipolar diffusion as a mechanism for fast reconnection. The reconnected flux of our resistive and resistive+Hall simulations replicates the GEM results. Furthermore, we investigate, for the first time, the effect of ambipolar diffusion in the GEM. The reconnected flux of the resistive+ambipolar and resistive+Hall+ambipolar simulations showed increases of up to 75\% and 143\%, respectively, compared to the resistive and resistive+Hall simulations, showing that ambipolar diffusion contributes significantly to the reconnected flux. Our second scenario has a magnetic Harris field without perturbations but with an out-of-plane component, known as a guide field. We found that the reconnection rate increased faster with ambipolar diffusion, reaching values close to 0.1 for the resistive+Hall+ambipolar simulation followed by the resistive+Hall. These two simulations achieved the highest kinetic energy, implying more efficient energy conversion during reconnection. |
| title | Systematic 2.5 D resistive MHD simulations with ambipolar diffusion and Hall effect for fast magnetic reconnection |
| topic | Solar and Stellar Astrophysics General Relativity and Quantum Cosmology Plasma Physics |
| url | https://arxiv.org/abs/2410.06391 |