Linking the Sun to the Heliosphere Using Composition Data and Modelling. A Test Case with a Coronal Jet

TL;DR

This paper tests a method to connect solar coronal features with in-situ measurements at 1AU using combined EUV, magnetic, and plasma data, demonstrating the potential to trace solar plasma origins.

Contribution

It introduces a diagnostics approach integrating multiple data sources and modeling to establish solar-heliosphere connectivity, validated with a coronal jet case study.

Findings

Identified open magnetic flux regions associated with the jet.

Detected FIP bias consistent with jet plasma at 1AU.

Successfully back-mapped jet source to ACE observations.

Abstract

Our understanding of the formation and evolution of the corona and the heliosphere is linked to our capability of properly interpreting the data from remote sensing and in-situ observations. In this respect, being able to correctly connect in-situ observations with their source regions on the Sun is the key for solving this problem. In this work we aim at testing a diagnostics method for this connectivity. This paper makes use of a coronal jet observed on 2010 August 2nd in active region 11092 as a test for our connectivity method. This combines solar EUV and in-situ data together with magnetic field extrapolation, large scale MHD modeling and FIP (First Ionization Potential) bias modeling to provide a global picture from the source region of the jet to its possible signatures at 1AU. Our data analysis reveals the presence of outflow areas near the jet which are within open magnetic flux regions and which present FIP bias consistent with the FIP model results. In our picture, one of these open areas is the candidate jet source. Using a back-mapping technique we identified the arrival time of this solar plasma at the ACE spacecraft. The in-situ data show signatures of changes in the plasma and magnetic field parameters, with FIP bias consistent with the possible passage of the jet material. Our results highlight the importance of remote sensing and in-situ coordinated observations as a key to solve the connectivity problem. We discuss our results in view of the recent Solar Orbiter launch which is currently providing such unique data.