Impact of the stellar oblation effect on estimation of the magnetic dipole strength
The surface magnetic field structure of an ellipsoidal star is modelled in the frame of the magnetic charge description (MCD) approach. It is shown that the stellar oblation effect can lead to the essential overestimation of the magnetic dipole strength value obtained from the mean crossover effect...
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| Veröffentlicht in: | Кинематика и физика небесных тел |
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| Datum: | 2005 |
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| Format: | Artikel |
| Sprache: | Englisch |
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Головна астрономічна обсерваторія НАН України
2005
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/79663 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Impact of the stellar oblation effect on estimation of the magnetic dipole strength / V. Khalack // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 299-302. — Бібліогр.: 8 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862723778349367296 |
|---|---|
| author | Khalack, V. |
| author_facet | Khalack, V. |
| citation_txt | Impact of the stellar oblation effect on estimation of the magnetic dipole strength / V. Khalack // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 299-302. — Бібліогр.: 8 назв. — англ. |
| collection | DSpace DC |
| container_title | Кинематика и физика небесных тел |
| description | The surface magnetic field structure of an ellipsoidal star is modelled in the frame of the magnetic charge description (MCD) approach. It is shown that the stellar oblation effect can lead to the essential overestimation of the magnetic dipole strength value obtained from the mean crossover effect (up to 12%) and quadratic magnetic field (up to 8%) in comparison with its theoretical value obtained for the case of the spherically symmetric star. Taking into account the gravity-darkening phenomenon is argued that this overestimation increases with the growth of the effective gravity difference at the equator and poles of the star. The data of the mean longitudinal magnetic field provide the most correct estimation of the magnetic dipole strength value in the ellipsoidal star.
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| first_indexed | 2025-12-07T18:43:27Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-79663 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0233-7665 |
| language | English |
| last_indexed | 2025-12-07T18:43:27Z |
| publishDate | 2005 |
| publisher | Головна астрономічна обсерваторія НАН України |
| record_format | dspace |
| spelling | Khalack, V. 2015-04-03T17:57:11Z 2015-04-03T17:57:11Z 2005 Impact of the stellar oblation effect on estimation of the magnetic dipole strength / V. Khalack // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 299-302. — Бібліогр.: 8 назв. — англ. 0233-7665 https://nasplib.isofts.kiev.ua/handle/123456789/79663 The surface magnetic field structure of an ellipsoidal star is modelled in the frame of the magnetic charge description (MCD) approach. It is shown that the stellar oblation effect can lead to the essential overestimation of the magnetic dipole strength value obtained from the mean crossover effect (up to 12%) and quadratic magnetic field (up to 8%) in comparison with its theoretical value obtained for the case of the spherically symmetric star. Taking into account the gravity-darkening phenomenon is argued that this overestimation increases with the growth of the effective gravity difference at the equator and poles of the star. The data of the mean longitudinal magnetic field provide the most correct estimation of the magnetic dipole strength value in the ellipsoidal star. I am kindly grateful to Dr. J. Zverko and Dr. J. Ziznovsky for their useful comments. I would also like to express my gratitude to the Local Organizing Committee of MAO–2004 for the partial financial support. en Головна астрономічна обсерваторія НАН України Кинематика и физика небесных тел MS3: Physics of Stars and Galaxies Impact of the stellar oblation effect on estimation of the magnetic dipole strength Article published earlier |
| spellingShingle | Impact of the stellar oblation effect on estimation of the magnetic dipole strength Khalack, V. MS3: Physics of Stars and Galaxies |
| title | Impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| title_full | Impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| title_fullStr | Impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| title_full_unstemmed | Impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| title_short | Impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| title_sort | impact of the stellar oblation effect on estimation of the magnetic dipole strength |
| topic | MS3: Physics of Stars and Galaxies |
| topic_facet | MS3: Physics of Stars and Galaxies |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/79663 |
| work_keys_str_mv | AT khalackv impactofthestellaroblationeffectonestimationofthemagneticdipolestrength |