X-Ray Jet Dynamics in a Polar Coronal Hole Region

TL;DR

This paper analyzes X-ray jet dynamics in a polar coronal hole using Hinode/XRT observations, focusing on transverse displacements, magnetic field interactions, and the need for 3-D reconnection models to explain the observed phenomena.

Contribution

It provides new observational insights into jet behavior in polar coronal holes and emphasizes the importance of 3-D magnetic reconnection models for understanding these events.

Findings

Transverse displacements of jets observed.

Jet motion linked to magnetic reconnection.

3-D models are necessary to explain the observations.

Abstract

New XRT observations of the north polar region taken from the X-ray Telescope (XRT) of the Hinode (Solar-B) spacecraft are used to analyze several time sequences showing small loop brightenings with a long ray above. We focus on the recorded transverse displacement of the jet and discuss scenarios to explain the main features of the events: the relationship with the expected surface magnetism, the rapid and sudden radial motion, and possibly the heating, based on the assumption that the jet occurs above a null point of the coronal magnetic field. We conclude that 3-D reconnection models are needed to explain the observational details of these events.