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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Magnetic Fields in the Barred Galaxies NGC 1097 and NGC 1365статья
- Авторы: Shoutenkov V., Beck R., Shukurov A., Sokoloff D.
- Сборник: IAU Joint Discussion
- Серия: IAU Joint Discussion
- Том: 14
- Год издания: 2000
- Аннотация: New polarization observations of the barred galaxies NGC 1097 and NGC 1365 have been made with the VLA at 6.2 and 3.5 cm. At both frequencies, NGC 1097 shows a strip of depolarization along the bar where the magnetic field is deflected by almost 90 degrees. Beck et al. (Nature, Vol. 397, p. 324) interpreted this strip as the location of a shear shock front which does not coincide with the dust lanes. Similar depolarized strips, also shifted from the dust lanes, are seen in NGC 1365. However, the magnetic field in this galaxy reveals a much smoother change in orientation than in NGC1097. Furthermore, high-resolution images of central ring in NGC 1097 have been obtained. The total power image shows individual blobs which correspond to magnetic field concentrations, not to star-formation regions in the ring. The magnetic field in the ring has a complex structure with a dominant spiral component. This may lead to mass inflow towards the active nucleus.
- Добавил в систему: Соколов Дмитрий Дмитриевич