Quasi-periodic spicule-like cool jets driven by Alfvén pulses

ABSTRACT We perform a 2.5D magnetohydrodynamic simulation to gain comprehensive understanding of the formation spicule-like cool jets caused by initial transverse velocity pulses akin Alfvén in solar chromosphere. invoke multiple (Vz) between 1.5 and 2.0 Mm atmosphere, which create perturbations. These transfer energy non-linearly field-aligned perturbations via ponderomotive force. This physical process further creates magnetoacoustic shocks followed quasi-periodic plasma motions atmosphere. The move upwards, subsequently causes rise fall chromospheric into overlying corona as thin jets. magnitude applied is taken range 50–90 km s−1. are found be strong enough generate analyse evolution, kinematics energetics these find that transported mass flux kinetic density substantial local corona. situ oscillations on scale ≃ 4.0 min above transition region.