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Mixed; Axisymmetric and Non- axisymmetric Field Generation

المصدر: مجلة التربوي
الناشر: جامعة المرقب - كلية التربية بالخمس
المؤلف الرئيسي: Darah, Alhashmi (Author)
المجلد/العدد: ع7
محكمة: نعم
الدولة: ليبيا
التاريخ الميلادي: 2015
الشهر: يوليو
الصفحات: 431 - 444
ISSN: 2011-421X
رقم MD: 762654
نوع المحتوى: بحوث ومقالات
اللغة: الإنجليزية
قواعد المعلومات: EduSearch
مواضيع:
كلمات المؤلف المفتاحية:
Mean-Field Dynamo | Axisymmetric | Non-Axisymmetric | Nonlinear
رابط المحتوى:
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المستخلص: Many of the astrophysical bodies have their magnetic field which is generated by electric conductivity of the core. The generation of magnetic field in a homogeneous electrical field is normally a threshold process, some of these fields are axisymmetric such as the field of the Earth, Jupiter and Saturn and some of them have a non-axisymmetric magnetic field like the field of the Sun, moreover others have the non-axisymmetric dominates over the axisymmetric field as in Uranus and Neptune Stachenko (1993). With these observations on mind we investigate excitable conditions of axisymmetric and non-axisymmetric field mode in spherical mean-field dynamo. In this paper, we consider the mixed; axisymmetric and non-axisymmetric on a spherical mean-field α2 dynamo model through nonlinear calculations with α-quenching feedback. It seems to be that the axisymmetric solution is more excited than the non-axisymmetric one in his model, the generated field could be an axisymmetric, nonaxisymmetric or both.

ISSN: 2011-421X

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