Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Detection of New Emerging Magnetic Flux from the Topology of SOHO/MDI Magnetograms. / Knyazeva, I. S.; Makarenko, N. G.; Livshits, M. A.
в: Astronomy Reports, Том 55, № 5, 2011, стр. 463-471.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Detection of New Emerging Magnetic Flux from the Topology of SOHO/MDI Magnetograms
AU - Knyazeva, I. S.
AU - Makarenko, N. G.
AU - Livshits, M. A.
PY - 2011
Y1 - 2011
N2 - Abstract—A topological method for detecting the new emergence of magnetic flux using SOHO/MDI magnetograms of the full solar disk is proposed. This method uses the number of pixels in the image that can be distinguished from a specified value to within a predetermined threshold (the number of disconnected components). We study more than ten very powerful active regions (ARs) with very high flare activity and show that the number of disconnected components increases directly before the development of a series of M and X flares, or accompanies this process. This behaviour is evident not only when there is an explicit emergence of a new flux and a series of fast flares, such as in AR 9236 (November 2000), but also in groups with many non-stationary processes developing along a neutral line of the large-scale magnetic field. We also discuss the possibility of using the obtained results for flare prediction.
AB - Abstract—A topological method for detecting the new emergence of magnetic flux using SOHO/MDI magnetograms of the full solar disk is proposed. This method uses the number of pixels in the image that can be distinguished from a specified value to within a predetermined threshold (the number of disconnected components). We study more than ten very powerful active regions (ARs) with very high flare activity and show that the number of disconnected components increases directly before the development of a series of M and X flares, or accompanies this process. This behaviour is evident not only when there is an explicit emergence of a new flux and a series of fast flares, such as in AR 9236 (November 2000), but also in groups with many non-stationary processes developing along a neutral line of the large-scale magnetic field. We also discuss the possibility of using the obtained results for flare prediction.
U2 - 10.1134/S1063772911050040
DO - 10.1134/S1063772911050040
M3 - Article
VL - 55
SP - 463
EP - 471
JO - Astronomy Reports
JF - Astronomy Reports
SN - 1063-7729
IS - 5
ER -
ID: 5565009