Analysis of time-domain correlations between EUV and in-situ observations of coronal jets

Abstract:

The role of small-scale coronal eruptive phenomena in the origin and heating of the solar wind remains an open question. In this work we attempt to determine the role played by coronal jets in forming the solar wind. This is a challenging problem due to inherent differences between remote-sensing observations of the source and in-situ observations of the outflowing plasma, as well as its travel time and evolution throughout the heliosphere. To overcome these challenges, we propose the use of Empirical Mode Decomposition to enable direct comparison of temporal signatures within remote sensing observations of eruptive phenomena in the corona and in-situ measurements of the solar wind. The technique is first validated using artificial data before being applied to measurements from the Solar Dynamics Observatory and Wind spacecraft. We discuss the potential reasons for discrepancies between results from the artificial data and observations at 1 AU, and their implications on the solar wind nature.