Polymeric jets throw light on the origin and nature of the forest of solar spicules

Dey, Sahel and Chatterjee, Piyali and O. V. S. N., Murthy and Korsós, Marianna B. and Liu, Jiajia and Nelson, Christopher J. and Erdélyi, Robertus (2022) Polymeric jets throw light on the origin and nature of the forest of solar spicules. Nature Physics. ISSN 1745-2473

[img] Text - Published Version
Restricted to Repository staff only

Download (28kB)

Abstract

Spicules are plasma jets that are observed in the dynamic interface region between the visible solar surface and the hot corona. At any given time, it is estimated that about 3 million spicules are present on the Sun. We find an intriguing parallel between the simulated spicular forest in a solar-like atmosphere and the numerous jets of polymeric fluids when both are subjected to harmonic forcing. In a radiative magnetohydrodynamic numerical simulation with sub-surface convection, solar global surface oscillations are excited similarly to those harmonic vibrations. The jets thus produced match remarkably well with the forests of spicules detected in observations of the Sun. Taken together, the numerical simulations of the Sun and the laboratory fluid dynamics experiments provide insights into the mechanism underlying the ubiquity of jets. The non-linear focusing of quasi-periodic waves in anisotropic media of magnetized plasma as well as polymeric fluids under gravity is sufficient to generate a forest of jets.

Item Type: Article
Authors: Dey, Sahel and Chatterjee, Piyali and O. V. S. N., Murthy and Korsós, Marianna B. and Liu, Jiajia and Nelson, Christopher J. and Erdélyi, Robertus
Document Language:
Language
English
Uncontrolled Keywords: Polymeric jets, solar spicules, Harmonic vibrations
Subjects: Natural Sciences > Physics
Divisions: Azim Premji University > School of Arts and Sciences
Full Text Status: Restricted
URI: http://publications.azimpremjifoundation.org/id/eprint/3385
Publisher URL:

Actions (login required)

View Item View Item