# Multiwavelength Study of Equatorial Coronal-Hole Jets

## TL;DR

This study analyzes 27 equatorial coronal-hole jets using high-resolution observations and magnetic field extrapolations, revealing their association with filament eruptions and supporting the breakout model of solar eruptions.

## Contribution

It provides a detailed observational analysis of coronal-hole jets, linking their origins to magnetic topology and eruption mechanisms, and confirms the breakout model in these events.

## Key findings

- 67% of jets associated with mini-filament ejections
- All jets originated in fan-spine magnetic topology
- Jets support the breakout model of solar eruptions

## Abstract

Jets (transient/collimated plasma ejections) occur frequently throughout the solar corona and contribute mass/energy to the corona and solar wind. By combining numerical simulations and high-resolution observations, we have made substantial progress recently on determining the energy buildup and release processes in these jets. Here we describe a study of 27 equatorial coronal-hole jets using Solar Dynamics Observatory/AIA and HMI observations on 2013 June 27-28 and 2014 January 8-10. Out of 27 jets, 18 (67%) are associated with mini-filament ejections; the other 9 (33%) do not show mini-filament eruptions but do exhibit mini-flare arcades and other eruptive signatures. This indicates that every jet in our sample involved a filament-channel eruption. From the complete set of events, 6 jets (22%) are apparently associated with tiny flux-cancellation events at the polarity inversion line, and 2 jets (7%) are associated with sympathetic eruptions of filaments from neighboring bright points. Potential-field extrapolations of the source-region photospheric magnetic fields reveal that all jets originated in the fan-spine topology of an embedded bipole associated with an extreme ultraviolet coronal bright point. Hence, all our jets are in agreement with the breakout model of solar eruptions. We present selected examples and discuss the implications for the jet energy build-up and initiation mechanisms.