Validation of a wave heated 3D MHD coronal-wind model using Polarized Brightness and EUV observations

TL;DR

This paper validates a 3D MHD coronal-wind model by comparing synthetic EUV and polarized brightness images with actual observations, demonstrating the model's capability to replicate the solar corona during quiet conditions.

Contribution

It introduces a validation process for the wave turbulence driven 3D MHD corona-wind model using observational data from EUV and white light images.

Findings

Model produces synthetic images comparable to observed corona.

Validation confirms the model's effectiveness in reproducing coronal features.

Different boundary conditions yield consistent results.

Abstract

The physical properties responsible for the formation and evolution of the corona and heliosphere are still not completely understood. 3D MHD global modeling is a powerful tool to investigate all the possible candidate processes. To fully understand the role of each of them, we need a validation process where the output from the simulations is quantitatively compared to the observational data. In this work, we present the results from our validation process applied to the wave turbulence driven 3D MHD corona-wind model WindPredict-AW. At this stage of the model development, we focus the work to the coronal regime in quiescent condition. We analyze three simulations results, which differ by the boundary values. We use the 3D distributions of density and temperature, output from the simulations at the time of around the First Parker Solar Probe perihelion (during minimum of the solar activity), to synthesize both extreme ultraviolet (EUV) and white light polarized (WL pB) images to reproduce the observed solar corona. For these tests, we selected AIA 193 A, 211 A and 171 A EUV emissions, MLSO K-Cor and LASCO C2 pB images obtained the 6 and 7 November 2018. We then make quantitative comparisons of the disk and off limb corona. We show that our model is able to produce synthetic images comparable to those of the observed corona.