https://oldena.lpnu.ua/handle/ntb/41466| Title: | The influence of the axial rotation on the degenerate dwarfs characteristics |
| Other Titles: | Вплив осьового обертання на характеристики вироджених карликів |
| Authors: | Ваврух, М. Смеречинський, С. Дзіковський, Д. Vavrukh, M. Smerechynskyi, S. Dzikovskyi, D. |
| Affiliation: | Львiвський національний університет імені Івана Франка Ivan Franko National University of Lviv |
| Bibliographic description (Ukraine): | Vavrukh M. The influence of the axial rotation on the degenerate dwarfs characteristics / M. Vavrukh, S. Smerechynskyi, D. Dzikovskyi // Mathematical Modeling and Computing. — Lviv : Lviv Politechnic Publishing House, 2017. — Vol 4. — No 1. — P. 107–115. |
| Bibliographic description (International): | Vavrukh M. The influence of the axial rotation on the degenerate dwarfs characteristics / M. Vavrukh, S. Smerechynskyi, D. Dzikovskyi // Mathematical Modeling and Computing. — Lviv : Lviv Politechnic Publishing House, 2017. — Vol 4. — No 1. — P. 107–115. |
| Is part of: | Mathematical Modeling and Computing, 1 (4), 2017 |
| Issue: | 1 |
| Volume: | 4 |
| Issue Date: | 15-Jun-2017 |
| Publisher: | Lviv Politechnic Publishing House |
| Place of the edition/event: | Lviv |
| UDC: | 524.31.084 524.384 524.352.3 |
| Keywords: | вироджений карлик густина у центрі зорі параметр хімічного складу частота обертання ступінь поляризації degenerate dwarf the density in the stellar center the chemical composition parameter the rotation frequency the degree of polarization |
| Number of pages: | 9 |
| Page range: | 107-115 |
| Start page: | 107 |
| End page: | 115 |
| Abstract: | Розраховано змiну характеристик холодних вироджених карликiв пiд впливом осьо-
вого обертання у межах три- та чотирипараметричної моделей. Показано, що вiд-
носне збiльшення маси карлика становить приблизно 5%. Тому максимальна маса
у стандартнiй моделi з парамагнiтною електронною пiдсистемою досягає 1.52M⊙, а
в моделi зi спiн-поляризованою електронною пiдсистемою 2.15M⊙. Знайдено за-
лежнiсть форми карлика вiд параметрiв моделей (густини у центрi зорi, параметра
хiмiчного складу, частоти обертання i ступеня поляризацiї). The influence of the axial rotation on degenerate dwarfs characteristics is calculated within the three- and four parametric model. It was shown that the relative increase of dwarf’s mass is about 5%. Therefore the maximal mass in standard model with paramagnetic electron subsystem reaches 1.52M⊙, and in the model with spin-polarized electron subsystem is 2.15M⊙. The dependence of the dwarf’s shape was found as a function of the model parameters (the density in the stellar center, the chemical composition parameter, the rotation frequency and the degree of polarization). |
| URI: | https://ena.lpnu.ua/handle/ntb/41466 |
| ISSN: | 2312-9794 |
| Copyright owner: | © 2017 Lviv Polytechnic National University CMM IAPMM NASU |
| References (Ukraine): | [1] AdamsW. S. The spectrum of the companion of Sirius. PASP. 27, 236 (1915). [2] FowlerR.H. On dense matter. MNRAS. 87, 114 (1926). [3] Chandrasekhar S. The maximum mass of ideal white dwarfs. Astrophys. Journ. 74, 81 (1931). [4] Chandrasekhar S. Stellar configurations with degenerate cores’ (second paper). MNRAS. 95, 676 (1935). [5] Salpeter E. Energy and pressure of a zero-temperature plasma. Astrophys. Journ. 134, 669 (1961). [6] Shapiro S. L. Teukolsky S.A. Black Holes, White Dwarfs and Neutron Stars. Cornell University, Ithaca, New York (1983). [7] HamadaT., Salpeter E. Models for zero-temperature stars. Europ. Astrophys. J. 133, 683 (1961). [8] ZeldovichYa.B., Novikov I.D. Relativistic astrophysics. Moscow, Nauka (1967). [9] VavrukhM.V., Smerechinskii S.V. A finite temperature Chandrasekhar model: determining the parameters and computing the characteristics of degenerate dwarfs. Astronomy Reports. 56, n. 5, 363 (2012). [10] VavrukhM.V., Smerechinskii S.V. Hot degenerate dwarfs in a two-phase model. Astronomy Reports. 57, n. 2, 913 (2013). [11] VavrukhM., TyshkoN., Smerechynskyj S. Interparticle interactions, general relativity effects, and critical parameter of white dwarfs. Mathematical Modeling And Computing. 1, n. 2, 264 (2014). [12] VavrukhM.V., DzikovskyiD.V., TyshkoN. L. Model of degenerate dwarf with spin-polarized electron system. Odessa Astronomical Publications. 28, n. 1, 82 (2015). |
| References (International): | [1] AdamsW. S. The spectrum of the companion of Sirius. PASP. 27, 236 (1915). [2] FowlerR.H. On dense matter. MNRAS. 87, 114 (1926). [3] Chandrasekhar S. The maximum mass of ideal white dwarfs. Astrophys. Journ. 74, 81 (1931). [4] Chandrasekhar S. Stellar configurations with degenerate cores’ (second paper). MNRAS. 95, 676 (1935). [5] Salpeter E. Energy and pressure of a zero-temperature plasma. Astrophys. Journ. 134, 669 (1961). [6] Shapiro S. L. Teukolsky S.A. Black Holes, White Dwarfs and Neutron Stars. Cornell University, Ithaca, New York (1983). [7] HamadaT., Salpeter E. Models for zero-temperature stars. Europ. Astrophys. J. 133, 683 (1961). [8] ZeldovichYa.B., Novikov I.D. Relativistic astrophysics. Moscow, Nauka (1967). [9] VavrukhM.V., Smerechinskii S.V. A finite temperature Chandrasekhar model: determining the parameters and computing the characteristics of degenerate dwarfs. Astronomy Reports. 56, n. 5, 363 (2012). [10] VavrukhM.V., Smerechinskii S.V. Hot degenerate dwarfs in a two-phase model. Astronomy Reports. 57, n. 2, 913 (2013). [11] VavrukhM., TyshkoN., Smerechynskyj S. Interparticle interactions, general relativity effects, and critical parameter of white dwarfs. Mathematical Modeling And Computing. 1, n. 2, 264 (2014). [12] VavrukhM.V., DzikovskyiD.V., TyshkoN. L. Model of degenerate dwarf with spin-polarized electron system. Odessa Astronomical Publications. 28, n. 1, 82 (2015). |
| Content type: | Article |
| Appears in Collections: | Mathematical Modeling And Computing. – 2017. – Vol. 4, No. 1 |
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2017v4n1_Vavrukh_M-The_influence_of_the_axial_107-115.pdf | 1.05 MB | Adobe PDF | View/Open | |
| 2017v4n1_Vavrukh_M-The_influence_of_the_axial_107-115__COVER.png | 428.97 kB | image/png | View/Open |
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