International Journal of Physics | Vol. 10, No. 6, June 2019 | pp. 41–48
DOI: 10.46882/2019/IJP/000110
Research Article
Title: Fluid Inflow Velocity Mapping and Reconnection Dynamics in Solar Prominence Ejections
Names of Authors: G. R. Davies¹, O. K. Semenov²
Authors’ Affiliations: ¹School of Physics and Astronomy, University of St Andrews, St Andrews, UK; ²Institute for Solid State Physics, Russian Academy of Sciences, Moscow, Russia
Abstract: Magnetic reconnection is the primary magnetohydrodynamic driver behind explosive energy release events in the solar atmosphere, accelerating the fast solar wind and initiating massive prominence ejections. This paper evaluates fluid inflow velocities and maps magnetic reconnection rates within an eruptive active loop using high-resolution data from satellite ultraviolet spectroscopic imagers. We tracked the Doppler profiles and spatial intensity variations of the C IV and Fe XII spectral emission lines to isolate magnetic topology changes under dense plasma constraints. The empirical measurements reveal systematic plasma inflows moving at 14.8 km/s, while directed outflows reach high velocities of 215.0 km/s along the magnetic separator lines. Based on these transport indicators, the local dimensionless reconnection rate was calculated to range between 0.04 and 0.07. These numbers track fast reconnection limits predicted by generalized Sweet-Parker equations adjusted for Hall currents and local plasmoid instabilities. Spectroscopic line-broadening diagnostics indicate localized turbulent temperatures peaking at 5.2 MK within the diffusion current sheet boundary, confirming strong viscous dissipation fields. These spectroscopic results provide robust observational constraints for calibration routines in coronal magnetohydrodynamics.
Keywords: Solar atmosphere; magnetic reconnection; prominence ejection; ultraviolet spectroscopy; plasma velocity; magnetohydrodynamics
Manuscript Timeline: Received: March 02, 2019; Revised: April 14, 2019; Accepted: May 02, 2019; Published: June 18, 2019
CN: Davies, G. R., & Semenov, O. K. (2019). Fluid Inflow Velocity Mapping and Reconnection Dynamics in Solar Prominence Ejections. International Journal of Physics, 10(6), 41–48.
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