Semi-Keplerian Magnetized Accretion-Ejection Structures
The structure of a thin geometrically, axisymmetric, a stationary disk around a central black hole threaded by a bipolar magnetic field has been Studied that drives jets by extracting angular momentum. In this work, it is assumed that the effect of viscosity turbulence is negligible. If the effect o...
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| Format: | Article |
| Language: | English |
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Damghan university
2021-07-01
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| Series: | Iranian Journal of Astronomy and Astrophysics |
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| Online Access: | https://ijaa.du.ac.ir/article_271_cb13e81daf77c9f2be26178ededb463f.pdf |
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| _version_ | 1841545155881992192 |
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| author | Seyedeh Zeynab Mousavi Ali Reza Khesali Azar Khosravi |
| author_facet | Seyedeh Zeynab Mousavi Ali Reza Khesali Azar Khosravi |
| author_sort | Seyedeh Zeynab Mousavi |
| collection | DOAJ |
| description | The structure of a thin geometrically, axisymmetric, a stationary disk around a central black hole threaded by a bipolar magnetic field has been Studied that drives jets by extracting angular momentum. In this work, it is assumed that the effect of viscosity turbulence is negligible. If the effect of viscosity turbulence is negligible and the lines of the initial magnetic field have the required curvature, the magnetic force can be the only factor that determines the material leaving the disk. A primary poloidal magnetic field is applied to the disk, which has two components r and z. The equations that describe the vertical structure of the disk in a cylindrical system have been solved. We assume that the angular velocity is not completely Keplerian and the deviation from the Keplerian rotation enters the equations. It was seen that for a smaller ejection rate (a smaller ), the deviation from the Keplerian rotation is greater. The vertical structure equations of the disk were written with the presence of the polytropic equation. The gas with polytropic state equation with different gammas is given in this paper. For all gases, the variation in the toroidal magnetic field in the vertical direction is similar and for a constant ejection rate, the monoatomic gas has a greater deviation from the Keplerian rotation. Our results show in the presence of the polytropic equation and the deviation from Keplerian rotation, the process of mass reduction in the vertical direction for diatomic gas occurs faster. |
| format | Article |
| id | doaj-art-d4f8d622f33843a9b0fad943e913c80a |
| institution | Kabale University |
| issn | 2322-4924 2383-403X |
| language | English |
| publishDate | 2021-07-01 |
| publisher | Damghan university |
| record_format | Article |
| series | Iranian Journal of Astronomy and Astrophysics |
| spelling | doaj-art-d4f8d622f33843a9b0fad943e913c80a2025-01-12T10:10:13ZengDamghan universityIranian Journal of Astronomy and Astrophysics2322-49242383-403X2021-07-018214716210.22128/ijaa.2022.577.1121271Semi-Keplerian Magnetized Accretion-Ejection StructuresSeyedeh Zeynab Mousavi0Ali Reza Khesali1Azar Khosravi2Department of physics, University of Mazandaran, Babolsar, IranDepartment of physics, University of Mazandaran, Babolsar, IranDepartment of physics, University of Mazandaran, Babolsar, IranThe structure of a thin geometrically, axisymmetric, a stationary disk around a central black hole threaded by a bipolar magnetic field has been Studied that drives jets by extracting angular momentum. In this work, it is assumed that the effect of viscosity turbulence is negligible. If the effect of viscosity turbulence is negligible and the lines of the initial magnetic field have the required curvature, the magnetic force can be the only factor that determines the material leaving the disk. A primary poloidal magnetic field is applied to the disk, which has two components r and z. The equations that describe the vertical structure of the disk in a cylindrical system have been solved. We assume that the angular velocity is not completely Keplerian and the deviation from the Keplerian rotation enters the equations. It was seen that for a smaller ejection rate (a smaller ), the deviation from the Keplerian rotation is greater. The vertical structure equations of the disk were written with the presence of the polytropic equation. The gas with polytropic state equation with different gammas is given in this paper. For all gases, the variation in the toroidal magnetic field in the vertical direction is similar and for a constant ejection rate, the monoatomic gas has a greater deviation from the Keplerian rotation. Our results show in the presence of the polytropic equation and the deviation from Keplerian rotation, the process of mass reduction in the vertical direction for diatomic gas occurs faster.https://ijaa.du.ac.ir/article_271_cb13e81daf77c9f2be26178ededb463f.pdfaccretion disksmagnetic fieldskeplerian rotationmagnetized accretion-ejection structure |
| spellingShingle | Seyedeh Zeynab Mousavi Ali Reza Khesali Azar Khosravi Semi-Keplerian Magnetized Accretion-Ejection Structures Iranian Journal of Astronomy and Astrophysics accretion disks magnetic fields keplerian rotation magnetized accretion-ejection structure |
| title | Semi-Keplerian Magnetized Accretion-Ejection Structures |
| title_full | Semi-Keplerian Magnetized Accretion-Ejection Structures |
| title_fullStr | Semi-Keplerian Magnetized Accretion-Ejection Structures |
| title_full_unstemmed | Semi-Keplerian Magnetized Accretion-Ejection Structures |
| title_short | Semi-Keplerian Magnetized Accretion-Ejection Structures |
| title_sort | semi keplerian magnetized accretion ejection structures |
| topic | accretion disks magnetic fields keplerian rotation magnetized accretion-ejection structure |
| url | https://ijaa.du.ac.ir/article_271_cb13e81daf77c9f2be26178ededb463f.pdf |
| work_keys_str_mv | AT seyedehzeynabmousavi semikeplerianmagnetizedaccretionejectionstructures AT alirezakhesali semikeplerianmagnetizedaccretionejectionstructures AT azarkhosravi semikeplerianmagnetizedaccretionejectionstructures |