Simulations of the Isothermal Collapse of Magnetic Rotating Protostellar Clouds
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Simulations of the Isothermal Collapse of Magnetic Rotating Protostellar Clouds
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| Автор |
Khaibrakhmanov, S. A.
Dudorov, A. E. Kargaltseva, N. S. Zhilkin, A. G. |
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| Тематика |
INTERSTELLAR MEDIUM
MAGNETIC FIELDS MAGNETIC-GAS-DYNAMICS (MHD) NUMERICAL SIMULATION STAR FORMATION |
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Abstract: We investigate the collapse of magnetic protostellar clouds of mass 10 and (Formula presented.). The collapse is simulated numerically using the two-dimensional magneto-gas-dynamic (MHD) code “Enlil.” The simulations show that protostellar clouds acquire a hierarchical structure by the end of the isothermal stage of collapse. Under the action of the electromagnetic force, the protostellar cloud takes the form of an oblate envelope with the half-thickness to radius ratio Z/R ~ 0.20-0.95. A geometrically and optically thin primary disk with radius (0.2- 0.7)R0 and Z/R ~ (10–2–10–1) forms inside the envelope, where R0 is the initial radius of the cloud. Primary disks are the structures in magnetostatic equilibrium. They form when the initial magnetic energy of the cloud exceeds 20% of its gravitational energy. The mass of the primary disk is 30–80% of the initial mass of the cloud. The first hydrostatic core subsequently forms in the center of the primary disc. We discuss the role of primary disks in the further evolution of clouds, as well as possible observational appearance of the internal hierarchy of the collapsing cloud from the point of view of the features of the magnetic field geometry and the distribution of angular momentum at different levels of the hierarchy. © 2021, Pleiades Publishing, Ltd.
Russian Foundation for Basic Research, РФФИ, (18-02-01067, 18-52-52006) Ministry of Education and Science of the Russian Federation, Minobrnauka, (075-15-2020-780, N13.1902.21.0039) Russian Science Foundation, RSF, (19-72-10012) Government Council on Grants, Russian Federation The work of S.A. Khaibrakhmanov in Section 6 was supported by the Russian Foundation for Basic Research (project 18-52-52006). The work of A.E. Dudorov in Section 3 was supported by the Russian Foundation for Basic Research (project 18-02-01067). The work of N.S. Kar-galtseva in Section 5 was supported by the Russian Science Foundation (project 19-72-10012). A.G. Zhilkin’s work in Section 2 was supported by the Government of the Russian Federation and the Ministry of Higher Education and Science of the Russian Federation, grant 075-15-2020-780 (N13.1902.21.0039). |
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| Дата |
2024-04-08T11:06:11Z
2024-04-08T11:06:11Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
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| Идентификатор |
Khaibrakhmanov, SA, Dudorov, AE, Kargaltseva, NS & Zhilkin, AG 2021, 'Simulations of the Isothermal Collapse of Magnetic Rotating Protostellar Clouds', Astronomy Reports, Том. 65, № 8, стр. 693-704. https://doi.org/10.1134/S1063772921090043
Khaibrakhmanov, S. A., Dudorov, A. E., Kargaltseva, N. S., & Zhilkin, A. G. (2021). Simulations of the Isothermal Collapse of Magnetic Rotating Protostellar Clouds. Astronomy Reports, 65(8), 693-704. https://doi.org/10.1134/S1063772921090043 1063-7729 Final All Open Access; Green Open Access https://arxiv.org/pdf/2210.12425 https://arxiv.org/pdf/2210.12425 http://elar.urfu.ru/handle/10995/131291 10.1134/S1063772921090043 85116048227 000690988800005 |
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| Язык |
en
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| Связанные ресурсы |
info:eu-repo/grantAgreement/RSF//19-72-10012
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Формат |
application/pdf
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Pleiades journals
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| Источник |
Astronomy Reports
Astronomy Reports |
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