Extreme Ultra-Violet Spectroscopy of the Lower Solar Atmosphere During Solar Flares

Abstract

The extreme ultraviolet portion of the solar spectrum contains a wealth of diagnostic tools for probing the lower solar atmosphere in response to an injection of energy, particularly during the impulsive phase of solar flares. These include temperature and density sensitive line ratios, Doppler shifted emission lines and nonthermal broadening, abundance measurements, differential emission measure profiles, and continuum temperatures and energetics, among others. In this paper I shall review some of the advances made in recent years using these techniques, focusing primarily on studies that have utilized data from Hinode/EIS and SDO/EVE, while also providing some historical background and a summary of future spectroscopic instrumentation.

34 pages, 8 figures. Submitted to Solar Physics as part of the Topical Issue on Solar and Stellar Flares

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Cited by in corpus (26)

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• Blue wing enhancement of the chromospheric Mg II h and k lines in a solar flare
• Non-Gaussian Velocity Distributions in Solar Flares from Extreme Ultraviolet Lines: A Possible Diagnostic of Ion Acceleration
• Observational Evidence of Magnetic Reconnection for Brightenings and Transition Region Arcades in IRIS observations
• Analysis and modelling of recurrent solar flares observed with Hinode/EIS on March 9, 2012
• Explosive chromospheric evaporation driven by nonthermal electrons around one footpoint of a solar flare loop
• The spectroscopic imprint of the pre-eruptive configuration resulting into two major coronal mass ejections
• The Spatial and Temporal Variations of Turbulence in a Solar Flare
• Solar Flare Arcade Modelling: Bridging the gap from 1D to 3D Simulations of Optically Thin Radiation
• The Anomalous Temporal Behaviour of Broadband Ly$\alpha$ Emission During Solar Flares From SDO/EVE
• Exploring mutual information between IRIS spectral lines. I. Correlations between spectral lines during solar flares and within the quiet Sun
• Impulsive Heating of Solar Flare Ribbons Above 10 MK
• The Neupert Effect of Flare UltraViolet and Soft X-ray Emissions
• A multiple spacecraft detection of the 2 April 2022 M-class flare and filament eruption during the first close Solar Orbiter perihelion
• Observations of Electron-driven Evaporation during a Flare Precursor
• Statistical Study of Chromospheric Evaporation in Impulsive Phase of Solar Flares
• Imaging observations of chromospheric evaporation in a circular-ribbon flare
• Energy Deposition by Energetic Electrons in a Diffusive Collisional Transport Model
• An investigation of flare emissions at multiple wavelengths
• Chromospheric velocities in an M3.2 flare using He I 1083.0 nm and Ca II 854.2 nm
• Continuum enhancements, line profiles and magnetic field evolution during consecutive flares
• Dual Origins of Rapid Flare Ribbon Downflows in an X9-class Solar Flare
• Multi-wavelength observations of the 2014 June 11 M3.9 flare: temporal and spatial characteristics
• Transport of electrons in tangled magnetic fields
• EUV Irradiance Observations from SDO/EVE as a Diagnostic of Solar Flares
• Time-dependent Turbulent Electron Acceleration and Transport in Solar Flares