Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity
We study the stability of a model of magnetized accretion disk, in whichoutflows play a significant role in driving the inflow, and magnetic field is generated bya dynamo operating in the disk. We present a local and linear analysis of the stabilityin the presence of self-gravity and winds. The nume...
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| Format: | Article |
| Language: | English |
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Damghan university
2022-10-01
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| Series: | Iranian Journal of Astronomy and Astrophysics |
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| Online Access: | https://ijaa.du.ac.ir/article_347_9c9bca287ba1cb00980109e5af54245f.pdf |
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| author | Sekine Karimzadeh Alireza Khesali Azar Khosravi |
| author_facet | Sekine Karimzadeh Alireza Khesali Azar Khosravi |
| author_sort | Sekine Karimzadeh |
| collection | DOAJ |
| description | We study the stability of a model of magnetized accretion disk, in whichoutflows play a significant role in driving the inflow, and magnetic field is generated bya dynamo operating in the disk. We present a local and linear analysis of the stabilityin the presence of self-gravity and winds. The numerical results show the model withself-gravity is unstable in all parts, while in a model without self-gravity, instabilitycan be observed only in regions near the central body. Eventually, the effect of windcooling on the model stability was discussed. According to the results, in systemswithout self-gravity, wind cooling can help the system towards stability, but in thepresence of self-gravity, it is shown that our model will remain unstable in all regions.Comparison of these result with observational evidence shows that this model can besuitable for the explaining the behavior of the disks surrounding young stellar objects. |
| format | Article |
| id | doaj-art-222b4aaf326c4c98a9a996ff08f8b3ca |
| institution | Kabale University |
| issn | 2322-4924 2383-403X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Damghan university |
| record_format | Article |
| series | Iranian Journal of Astronomy and Astrophysics |
| spelling | doaj-art-222b4aaf326c4c98a9a996ff08f8b3ca2025-01-12T10:09:48ZengDamghan universityIranian Journal of Astronomy and Astrophysics2322-49242383-403X2022-10-019214916310.22128/ijaa.2022.666.1143347Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-GravitySekine Karimzadeh0Alireza Khesali1Azar Khosravi2Department of Physics, Faculty of Sciences, University of Mazandaran, Babolsar, IranDepartment of Physics, University of Mazandaran Babolsar IranUniversity of MazandaranWe study the stability of a model of magnetized accretion disk, in whichoutflows play a significant role in driving the inflow, and magnetic field is generated bya dynamo operating in the disk. We present a local and linear analysis of the stabilityin the presence of self-gravity and winds. The numerical results show the model withself-gravity is unstable in all parts, while in a model without self-gravity, instabilitycan be observed only in regions near the central body. Eventually, the effect of windcooling on the model stability was discussed. According to the results, in systemswithout self-gravity, wind cooling can help the system towards stability, but in thepresence of self-gravity, it is shown that our model will remain unstable in all regions.Comparison of these result with observational evidence shows that this model can besuitable for the explaining the behavior of the disks surrounding young stellar objects.https://ijaa.du.ac.ir/article_347_9c9bca287ba1cb00980109e5af54245f.pdfaccretion disksoutflowsinstabilitymagnetic fields |
| spellingShingle | Sekine Karimzadeh Alireza Khesali Azar Khosravi Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity Iranian Journal of Astronomy and Astrophysics accretion disks outflows instability magnetic fields |
| title | Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity |
| title_full | Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity |
| title_fullStr | Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity |
| title_full_unstemmed | Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity |
| title_short | Instability in the Magnetized Accretion Disks with Outflows in the Presence of Self-Gravity |
| title_sort | instability in the magnetized accretion disks with outflows in the presence of self gravity |
| topic | accretion disks outflows instability magnetic fields |
| url | https://ijaa.du.ac.ir/article_347_9c9bca287ba1cb00980109e5af54245f.pdf |
| work_keys_str_mv | AT sekinekarimzadeh instabilityinthemagnetizedaccretiondiskswithoutflowsinthepresenceofselfgravity AT alirezakhesali instabilityinthemagnetizedaccretiondiskswithoutflowsinthepresenceofselfgravity AT azarkhosravi instabilityinthemagnetizedaccretiondiskswithoutflowsinthepresenceofselfgravity |