{"title":"Radiation Pressure-Driven Magneto-Gravitational Instability in Finitely Conducting Strongly Coupled Quantum Plasmas","authors":"Mehak Mahajan, Ram Prasad Prajapati","doi":"10.1007/s13538-025-01734-9","DOIUrl":null,"url":null,"abstract":"<div><p>This paper investigates the radiation pressure-driven linear magneto-gravitational instability in finitely conducting strongly coupled quantum plasma within the framework of the generalized hydrodynamic fluid model. The radiation pressure assists in the dynamic behavior of the plasmas by modifying the dispersion properties of the gravitational instability. Normal mode analysis is applied to the linearized perturbation equations to derive the general dispersion relation. The dispersion relations are discussed in the hydrodynamic and kinetic limits in the transverse and longitudinal propagation modes. The Jeans instability criterion and Jeans length are significantly modified due to radiation pressure, quantum corrections, and strong coupling effects. The viscoelastic compression mode in the kinetic limit has been coupled with quantum diffraction and Alfvén mode. It is also observed that the radiation pressure, quantum effects, and viscoelastic parameters suppress the growth rates; thus, these have stabilizing effects on the gravitational instability. The effects of various parameters on the growth rate of the instability are calculated numerically, and the outcomes are represented graphically.</p></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"55 3","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brazilian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s13538-025-01734-9","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This paper investigates the radiation pressure-driven linear magneto-gravitational instability in finitely conducting strongly coupled quantum plasma within the framework of the generalized hydrodynamic fluid model. The radiation pressure assists in the dynamic behavior of the plasmas by modifying the dispersion properties of the gravitational instability. Normal mode analysis is applied to the linearized perturbation equations to derive the general dispersion relation. The dispersion relations are discussed in the hydrodynamic and kinetic limits in the transverse and longitudinal propagation modes. The Jeans instability criterion and Jeans length are significantly modified due to radiation pressure, quantum corrections, and strong coupling effects. The viscoelastic compression mode in the kinetic limit has been coupled with quantum diffraction and Alfvén mode. It is also observed that the radiation pressure, quantum effects, and viscoelastic parameters suppress the growth rates; thus, these have stabilizing effects on the gravitational instability. The effects of various parameters on the growth rate of the instability are calculated numerically, and the outcomes are represented graphically.
期刊介绍:
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.