Prominence material observed by SoloHI beyond 0.5au

TL;DR

This paper reports the first detection of prominence material by SoloHI beyond 0.5 au, demonstrating SoloHI's capability to observe CME filament material at large heliocentric distances.

Contribution

It presents the first observation of prominence material by SoloHI beyond 0.5 au, highlighting its potential for studying CME evolution in the heliosphere.

Findings

Prominence material detected by SoloHI at ~0.57 au.

CME filament material reaches ~122.5 solar radii.

SoloHI's high-resolution imaging enables new heliospheric observations.

Abstract

With the combination of observations from in-situ and high-resolution remote sensing instruments, the Solar Orbiter (SolO) mission has become a particularly valuable mission for studying the inner heliosphere. With a field of view (FOV) of 40$^\circ$ to the east of the Sun, the Solar Orbiter Heliospheric Imager (SoloHI) is one of the six remote sensing instruments on board the Solar Orbiter (SolO) spacecraft. SoloHI's high-resolution imaging observations of the heliosphere and its higher cadence than previous generations of heliospheric imagers make it a perfect candidate to perform and complement studies of CMEs evolution through the heliosphere. In this work, we present the first prominence material detected by SoloHI along with other remote sensing instruments. We report that as the CME propagates out in the heliosphere, the associated filament material reaches a heliocentric height of $\sim$122.5$\,$R$_{\odot}$ ($\sim$0.57$\,$au).