On the Relationship Between Polar Coronal Jets and Plumes

TL;DR

This study investigates the connection between polar coronal jets and plumes using Hinode/XRT and STEREO EUV data, revealing that most jets are related to plumes and may serve as their precursors.

Contribution

It provides new observational evidence linking coronal jets to the formation and brightness variations of polar plumes, highlighting the jet-plume relationship.

Findings

Over 90% of jets are related to plumes.

70% of jets originate from the same location as plume haze.

Jet-like events influence the brightness of pre-existing plumes.

Abstract

We utilize observations from {\emph{Hinode}}/XRT and the Extreme ultraviolet (EUV) imagers onboard {\emph{STEREO}} to study the relationship between coronal jets and plumes. The data were recorded on Apr. 7-8 and Nov. 2-4, 2007. Detailed results are presented for the Apr. campaign along with preliminary analysis of the Nov. observations. We find that $>90%$ of the identified jets are directly related to plumes (Apr. data). EUV data show that plume haze rose from the same spatial location of more than 70% of the identified jets. The remaining jets occurred in areas where plume material exists already. The jet-plume transition is smooth in some cases and delayed by up to several minutes in others. Short-lived, jet-like events and small transient bright points occur at different locations within the base of pre-existing long-lived plumes. The latter are enhanced after the manifestation of jet-like events. The present observations suggest evidence for X-ray jets as precursors of polar plumes and of their brightness changes.