Speaker
Description
First Name: Rohan
Last Name: Bose
Affiliation: ARIES, Nainital
All Authors: Rohan Bose, Vaibhav Pant, Arpit Kumar Shrivastav
Abstract: Coronal jets are ubiquitous small-scale transient events in the solar atmosphere, often associated with magnetic reconnection. In this study, we investigate polar coronal hole jets observed simultaneously by HRI/Solar Orbiter, SJI/IRIS, and AIA/SDO, providing a comprehensive multi-thermal view of the jet evolution. The multi-instrument observations reveal the presence of both hot and cool plasma components, indicating complex temperature structuring within the jet. A notable finding is the interaction of a dark material, likely a mini-filament, with the jet spire, suggesting the involvement of filament activation in the onset of the jet. We also identify a horizontal drift motion of the jet during its evolution, which we interpret in the framework proposed by Chandrasekhar et al. (2014). Furthermore, we report another case showing sequential jet eruptions, consistent with the scenario described in the same model. Despite an extensive search, no similar examples of horizontal drift have been found in the polar coronal hole region to date, making this observation particularly intriguing. Our results highlight the dynamic nature and magnetic complexity of polar jets, emphasising their importance in understanding magnetic reconnection and mass transfer processes in the solar corona.