Gravitational instability of radiative plasma with finite larmor radius corrections

Kaothekar, Sachin; Chhajlani, R. K.

doi:10.1088/1742-6596/365/1/012053

Cited by 5 publications

(14 citation statements)

References 7 publications

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“…The above condition of instability is independent of FLR corrections, finite electrical conductivity, magnetic field strength, and viscosity. The above inequality (12) is same as obtained by Bora and Talwar [34], and by Kaothekar and Chhajlani [36]. But Kaothekar and Chhajlani [36] have also considered the effect of permeability in their analysis.…”

Section: Isrn Astronomy and Astrophysicssupporting

confidence: 58%

“…The above inequality (12) is same as obtained by Bora and Talwar [34], and by Kaothekar and Chhajlani [36]. But Kaothekar and Chhajlani [36] have also considered the effect of permeability in their analysis. Here in the present problem we neglect the effect of permeability to give better insight in real problem.…”

Section: Isrn Astronomy and Astrophysicssupporting

confidence: 58%

“…Also in absence of FLR corrections, viscosity and finite conductivity dispersion relation (7) reduces to that obtained by Field [24] for nongravitating medium. The dispersion relation (7) is different from (9) of Kaothekar and Chhajlani [36].…”

Section: Dispersion Relationmentioning

confidence: 82%

“…More recently Kaothekar and Chhajlani [36] have carried out the problem of gravitational instability of radiative plasma with FLR corrections.…”

Section: Isrn Astronomy and Astrophysicsmentioning

confidence: 99%

“…We also find that none of the above authors has tried to explore Jeans condition for viscous and nonviscous plasma with FLR corrections, radiative heat-loss function, and thermal conductivity. The problem given by Kaothekar and Chhajlani [36] is briefly discussed with permeability parameter, but in present paper we have made a detailed analysis of the problem of self-gravitational instability with all the considered physical parameters, without including the effect of permeability to give a better insight in real problem. Therefore in the present work self-gravitational instability of magnetized plasma with FLR corrections, radiative heat-loss function, viscosity, thermal conductivity, and finite electrical resistivity for self-gravitating configuration is studied.…”

Section: Isrn Astronomy and Astrophysicsmentioning

confidence: 99%

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Effect of Radiative Heat-Loss Function and Finite Larmor Radius Corrections on Jeans Instability of Viscous Thermally Conducting Self-Gravitating Astrophysical Plasma

Kaothekar

Chhajlani

2012

ISRN Astronomy and Astrophysics

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The effect of radiative heat-loss function and finite ion Larmor radius (FLR) corrections on the self-gravitational instability of infinite homogeneous viscous plasma has been investigated incorporating the effects of thermal conductivity and finite electrical resistivity for the formation of a star in astrophysical plasma. The general dispersion relation is derived using the normal mode analysis method with the help of relevant linearized perturbation equations of the problem. Furthermore the wave propagation along and perpendicular to the direction of external magnetic field has been discussed. Stability of the medium is discussed by applying Routh Hurwitz's criterion. We find that the presence of radiative heat-loss function and thermal conductivity modify the fundamental Jeans criterion of gravitational instability into radiative instability criterion. From the curves we see that temperature dependent heat-loss function, FLR corrections and viscosity have stabilizing effect, while density dependent heat-loss function has destabilizing effect on the growth rate of self-gravitational instability. Our result shows that the FLR corrections and radiative heat-loss functions affect the star formation.

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Section: Isrn Astronomy and Astrophysicssupporting

confidence: 58%

Section: Isrn Astronomy and Astrophysicssupporting

confidence: 58%

Section: Dispersion Relationmentioning

confidence: 82%

“…More recently Kaothekar and Chhajlani [36] have carried out the problem of gravitational instability of radiative plasma with FLR corrections.…”

Section: Isrn Astronomy and Astrophysicsmentioning

confidence: 99%

Section: Isrn Astronomy and Astrophysicsmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Radiative Heat-Loss Function and Finite Larmor Radius Corrections on Jeans Instability of Viscous Thermally Conducting Self-Gravitating Astrophysical Plasma

Kaothekar

Chhajlani

2012

ISRN Astronomy and Astrophysics

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Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections

Kaothekar¹

2016

AIP Advances

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I have studied the effects of finite electron inertia, finite ion Larmor radius (FLR) corrections, and radiative heat-loss function on the thermal instability of an infinite homogeneous, viscous plasma incorporating the effect of thermal conductivity for star formation in interstellar medium (ISM). A general dispersion relation is derived using the normal mode analysis method with the help of relevant linearized perturbation equations of the problem. The wave propagation is discussed for longitudinal and transverse directions to the external magnetic field and the conditions of modified thermal instabilities and stabilities are discussed in different cases. We find that the thermal instability criterion is get modified into radiative instability criterion by inclusion of radiative heat-loss functions with thermal conductivity. The viscosity of medium removes the effect of FLR corrections from the condition of radiative instability. Numerical calculation shows stabilizing effect of heat-loss function, viscosity and FLR corrections, and destabilizing effect of finite electron inertia on the thermal instability. Results carried out in this paper shows that stars are formed in interstellar medium mainly due to thermal instability.

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Effect of Finite Ion Larmor Radius (FLR) Corrections on Thermal Instability of Rotating Radiative Porous Astrophysical Plasma in Interstellar Medium (ISM)

Kaothekar

Mishra

Phadke³

2023

J. Phys.: Conf. Ser.

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Infinite homogeneous plasma’s thermal instability has been studied in relation to finite ion Larmor radius (FLR) corrections, rotation, and porosity, as well as the impacts of radiative heat-loss function and thermal conductivity. With the aid of a normal mode analysis framework and the necessary difficulty-appropriate linearized perturbation equations, a universal dispersion relation is investigated. For the propagation of transverse waves, this dispersion relationship further condenses for rotation axes parallel to and at right angles to the magnetic field. It is proven that the presence of rotation, porosity, thermal conductivity, and radiative heat-loss function altered the thermal instability criterion. To show how different parameters affect the rate at which the thermal instability grows, numerical calculations have been carried out. We discover that rotation, FLR corrections, and medium porosity stabilised the growth rate of the thermal system in the transverse mode of propagation. The conclusion of this research states that the rotation, porosity, and FLR corrections have an impact on the configuration of dense molecular clouds and star formation.

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Gravitational instability of radiative plasma with finite larmor radius corrections

Cited by 5 publications

References 7 publications

Effect of Radiative Heat-Loss Function and Finite Larmor Radius Corrections on Jeans Instability of Viscous Thermally Conducting Self-Gravitating Astrophysical Plasma

Effect of Radiative Heat-Loss Function and Finite Larmor Radius Corrections on Jeans Instability of Viscous Thermally Conducting Self-Gravitating Astrophysical Plasma

Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections

Effect of Finite Ion Larmor Radius (FLR) Corrections on Thermal Instability of Rotating Radiative Porous Astrophysical Plasma in Interstellar Medium (ISM)

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