Abstract Details
| Name: Ritika Solanki Affiliation: IIT(BHU), Varanasi Conference ID: ASI2019_186 Title : Partial Eruption of a Quiet-Sun Blowout Jet due to the Kink Instability Authors and Co-Authors : Ritika Solanki, Abhishek K. Srivastava, Yamini K. Rao, Bhola N. Dwivedi Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : We have studied a coronal blowout jet eruption observed on 16 May 2014 in the quiet Sun region using observations from the Solar Dynamics Observatory (SDO). The intensity profiles in the different SDO/AIA filters show the multi-temperature plasma evolving at the base of the blowout jet. The magnetic flux cancellation signature as seen by Helioseismic Magnetic Imager (HMI) line of sight (LOS) magnetograms most likely triggers the initial plasma eruptions associated with the jet. The north-ward part of the blowout jet is driven with an apparent velocity of 310 km s-1. The rest part of the jet rises above and then falls back due to the evolution of a kinked fluxtube, which traps the associated plasma. The north-ward segment of the blowout jet is subjected to the plasma twisting, which crosses the threshold value in order to realize the kink instability. The distribution of velocity field in and around the footpoint of the jet Fourier Local Correlation Technique (FLCT), demonstrates the presence of shearing motion which further triggers the high twist, and associated kink instability in the north-ward part of the blowout jet. While the rest of the plasma eruptions associated with the blowout jet is subsided, its kink unstable north-ward part is subjected to partial eruption in the corona. To our knowledge, this is the first observational case study of the partial eruption of kink-unstable quiet-Sun blowout jet, which may further shed light on the triggering mechanism (s) of such giant jets. |