Reorganization of Photospheric Magnetic Fields in Active Regions During Energetic Flares

被引：1

作者：

Santos, J. C. ^{[1
]}

Wrasse, C. M. ^{[2
]}

机构：

[1] Univ Tecnol Fed Parana, Curitiba, Parana, Brazil

[2] Inst Nacl Pesquisas Espaciais, Sao Paulo, Brazil

来源：

SOLAR PHYSICS | 2016年 / 291卷 / 04期

关键词：

Magnetic fields; energy spectra; photosphere; Sun; flares; SPECTRA;

D O I：

10.1007/s11207-016-0895-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The reorganization of the photospheric magnetic field may be important for flaring activity. In this work we use the time evolution of the magnetic power spectra to identify for which length scales the reorganization of the active region magnetic field is most closely related to energetic flares. Our results show that the reorganization occurs mainly for length scales larger than 12.6 Mm and may start much before the time of the flare, but the time evolution of magnetic power spectra does not show regular patterns. An analysis of the dissipation spectra suggests that the dissipation takes place at all spatial scales, including small wavenumbers in which more energy is available.

引用

页码：1107 / 1114

页数：8

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