Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections
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)....
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2016-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4961991 |
| _version_ | 1819053724204531712 |
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| author | Sachin Kaothekar |
| author_facet | Sachin Kaothekar |
| author_sort | Sachin Kaothekar |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T12:40:16Z |
| format | Article |
| id | doaj.art-0188700174894799a23521956660352b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T12:40:16Z |
| publishDate | 2016-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-0188700174894799a23521956660352b2022-12-21T19:03:48ZengAIP Publishing LLCAIP Advances2158-32262016-08-0168085020085020-1410.1063/1.4961991079608ADVStar formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius correctionsSachin Kaothekar0Department of Physics, Mahakal Institute of Technology, Ujjain-456664, Madhya Pradesh, IndiaI 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.http://dx.doi.org/10.1063/1.4961991 |
| spellingShingle | Sachin Kaothekar Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections AIP Advances |
| title | Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections |
| title_full | Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections |
| title_fullStr | Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections |
| title_full_unstemmed | Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections |
| title_short | Star formation through thermal instability of radiative plasma with finite electron inertia and finite Larmor radius corrections |
| title_sort | star formation through thermal instability of radiative plasma with finite electron inertia and finite larmor radius corrections |
| url | http://dx.doi.org/10.1063/1.4961991 |
| work_keys_str_mv | AT sachinkaothekar starformationthroughthermalinstabilityofradiativeplasmawithfiniteelectroninertiaandfinitelarmorradiuscorrections |