# Quasi-periodic spicule-like cool jets driven by Alfv\\'en pulses

Source: [Quasi-periodic spicule-like cool jets driven by Alfv\\'en pulses](<https://www.sota2.com/research/paper/68fa41061e209131ce8f7c2b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T03:06:03.827Z

Authors: B. Singh, A.K. Srivastava, K. Sharma, S.K. Mishra, B.N. Dwivedi

Published: 2022-02-01T15:59:00.000Z

## Abstract

We perform a 2.5 dimensional magnetohydrodynamic (MHD) simulation to understand a comprehensive view of the formation of spicule-like cool jets due to initial transverse velocity pulses akin to Alfv\\'en pulses in the solar chromosphere. We invoke multiple velocity ($V\_{z}$) pulses between 1.5 and 2.0 Mm in the solar atmosphere, which create the initial transverse velocity perturbations. These pulses transfer energy non-linearly to the field aligned perturbations due to the ponderomotive force. This physical process further creates the magnetoacoustic shocks followed by quasi-periodic plasma motions in the solar atmosphere. The field aligned magnetoacoustic shocks move upward which subsequently cause quasi-periodic rise and fall of the chromospheric plasma into the overlying corona as a thin and cool spicule-like jets. The magnitude of the initial applied transverse velocity pulses are taken in the range of 50-90 km $s^{-1}$. These pulses are found to be strong enough to generate the spicule-like jets. We analyze the evolution, kinematics and energetics of these spicule-like jets. We find that the transported mass flux and kinetic energy density are substantial in the localized solar-corona. These mass motions generate $\\it in$ $situ$ quasi-periodic oscillations on the scale of $\\simeq$ 4.0 min above the transition region.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2202.00501>)

[PDF](<https://arxiv.org/pdf/2202.00501.pdf>)