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Acoustic stability of a self-gravitating cylinder leading to astrostructure formation

We employ a quantum hydrodynamic model to investigate the cylindrical acoustic waves excitable in a gyromagnetoactive self-gravitating viscous cylinder comprised of two-component (electron–ion) plasma. The electronic equation of state incorporates the effect of temperature degeneracy. It reveals an...

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Autores principales: Dasgupta, Sayanti, Atteya, Ahmed, Karmakar, Pralay Kumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156794/
https://www.ncbi.nlm.nih.gov/pubmed/37137950
http://dx.doi.org/10.1038/s41598-023-34415-1
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author Dasgupta, Sayanti
Atteya, Ahmed
Karmakar, Pralay Kumar
author_facet Dasgupta, Sayanti
Atteya, Ahmed
Karmakar, Pralay Kumar
author_sort Dasgupta, Sayanti
collection PubMed
description We employ a quantum hydrodynamic model to investigate the cylindrical acoustic waves excitable in a gyromagnetoactive self-gravitating viscous cylinder comprised of two-component (electron–ion) plasma. The electronic equation of state incorporates the effect of temperature degeneracy. It reveals an expression for the generalized pressure capable of reproducing a completely degenerate (CD) quantum (Fermi) pressure and a completely non-degenerate (CND) classical (thermal) pressure. A standard cylindrical wave analysis, moderated by the Hankel function, yields a generalized linear (sextic) dispersion relation. The low-frequency analysis is carried out procedurally in four distinct parametric special cases of astronomical importance. It includes the quantum (CD) non-planar (cylindrical), quantum (CD) planar, classical (CND) non-planar (cylindrical), and classical (CND) planar. We examine the multi-parametric influences on the instability dynamics, such as the plasma equilibrium concentration, kinematic viscosity, and so forth. It is found that, in the quantum regime, the concentration plays a major role in the system destabilization. In the classical regime, the plasma temperature plays an important role in both the stabilization and destabilization. It is further seen that the embedded magnetic field influences the instability growth dynamics in different multiparametric regimes extensively, and so forth. The presented analysis can hopefully be applicable to understand the cylindrical acoustic wave dynamics leading actively to the formation of astrophysical gyromagnetic (filamentary) structures in diverse astronomical circumstances in both the classical and quantum regimes of astronomical relevance.
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spelling pubmed-101567942023-05-05 Acoustic stability of a self-gravitating cylinder leading to astrostructure formation Dasgupta, Sayanti Atteya, Ahmed Karmakar, Pralay Kumar Sci Rep Article We employ a quantum hydrodynamic model to investigate the cylindrical acoustic waves excitable in a gyromagnetoactive self-gravitating viscous cylinder comprised of two-component (electron–ion) plasma. The electronic equation of state incorporates the effect of temperature degeneracy. It reveals an expression for the generalized pressure capable of reproducing a completely degenerate (CD) quantum (Fermi) pressure and a completely non-degenerate (CND) classical (thermal) pressure. A standard cylindrical wave analysis, moderated by the Hankel function, yields a generalized linear (sextic) dispersion relation. The low-frequency analysis is carried out procedurally in four distinct parametric special cases of astronomical importance. It includes the quantum (CD) non-planar (cylindrical), quantum (CD) planar, classical (CND) non-planar (cylindrical), and classical (CND) planar. We examine the multi-parametric influences on the instability dynamics, such as the plasma equilibrium concentration, kinematic viscosity, and so forth. It is found that, in the quantum regime, the concentration plays a major role in the system destabilization. In the classical regime, the plasma temperature plays an important role in both the stabilization and destabilization. It is further seen that the embedded magnetic field influences the instability growth dynamics in different multiparametric regimes extensively, and so forth. The presented analysis can hopefully be applicable to understand the cylindrical acoustic wave dynamics leading actively to the formation of astrophysical gyromagnetic (filamentary) structures in diverse astronomical circumstances in both the classical and quantum regimes of astronomical relevance. Nature Publishing Group UK 2023-05-03 /pmc/articles/PMC10156794/ /pubmed/37137950 http://dx.doi.org/10.1038/s41598-023-34415-1 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Dasgupta, Sayanti
Atteya, Ahmed
Karmakar, Pralay Kumar
Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title_full Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title_fullStr Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title_full_unstemmed Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title_short Acoustic stability of a self-gravitating cylinder leading to astrostructure formation
title_sort acoustic stability of a self-gravitating cylinder leading to astrostructure formation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156794/
https://www.ncbi.nlm.nih.gov/pubmed/37137950
http://dx.doi.org/10.1038/s41598-023-34415-1
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