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: http://www.astro.spbu.ru/staff/afk/Papers/2004/MgnFld2004abstr.html
Дата изменения: Fri Nov 19 16:09:10 2010 Дата индексирования: Tue Oct 2 03:52:55 2012 Кодировка: Поисковые слова: propulsion |
Results of a study of fast line profile variability (lpv) in spectra of selected bright O-stars are reported. A regular component of {\em lpv} in spectra of the star lambda Ori A with estimated period P = 3d have been detected. We suppose that the formation of long time-scale regular components of {\em lpv} can be explained in the framework of the magnetically confined wind-shock (MCWS) model of Babel & Montmerle (1997a). In the context of testing the MCWS model a program of searching for weak magnetic fields in bright O and early B stars is outlined. The possibility to measure weak longitudinal magnetic fields B = 100 G is demonstrated.