Alfvén pulse driven spicule-like jets in the presence of thermal conduction and ion-neutral collision in two-fluid regime

Abstract

We present the formation of quasi-periodic cool spicule-like jets in the solar atmosphere using 2.5-D numerical simulation in two-fluid regime (ions+neutrals) under the presence of thermal conduction and ion-neutral collision. The nonlinear, impulsive Alfvénic perturbations at the top of the photosphere trigger field aligned magnetoacoustic perturbations due to ponderomotive force. The transport of energy from Alfvén pulse to such vertical velocity perturbations due to ponderomotive force is considered as an initial trigger mechanism. Thereafter, these velocity perturbations steepen into the shocks followed by quasi-periodic rise and fall of the cool jets transporting mass in the overlying corona. This article is part of the theme issue ‘Partially ionized plasma of the solar atmosphere: recent advances and future pathways’.

Partially ionized plasma of the solar atmosphere: recent advances and future pathways

“…[ 7 ] studied the influence of partial ionization in the lower solar atmosphere on the acoustic cut-off frequency of gravity waves, finding the partial ionized effects are necessary to match the numerical modelling to solar observations. Srivastava et al [ 8 ] used two-fluid numerical simulations to model the formation of thin jets, called spicules, in the solar atmosphere with the ion-neutral effects, an important aspect of driving a high height of the simulated spicules.…”