Pre-flare changes in the turbulence regime for the photospheric magnetic field in a solar active region

2003 ◽  
Vol 47 (2) ◽  
pp. 151-160 ◽  
Author(s):  
V. I. Abramenko
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Photospheric Magnetic Field ◽  
Solar Active Region ◽  
Turbulence Regime

scholarly journals The Nonpotentiality of Active‐Region Coronae and the Dynamics of the Photospheric Magnetic Field

2005 ◽  
Vol 628 (1) ◽  
pp. 501-513 ◽  
Author(s):  
Carolus J. Schrijver ◽  
Marc L. DeRosa ◽  
Alan M. Title ◽  
Thomas R. Metcalf
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Photospheric Magnetic Field

scholarly journals The Formation of a Moat Around a Sunspot as Observed on Longitudinal–Field Magnetograms (?)

1993 ◽  
Vol 141 ◽  
pp. 75-77
Author(s):  
L.V. Ermakova
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Spatial Resolution ◽  
Sunspot Group ◽  
Longitudinal Magnetic Field ◽  
Photospheric Magnetic Field ◽  
Longitudinal Field ◽  
Maximum Area ◽  
Spot Group

In this paper the dynamics of the photospheric magnetic field near the sunspot of the active region McMath 15508 is considered on the basis of longitudinal magnetic field B11 magnetograms. The magnetograms were obtained at the panoramic magnetograph of the Sayan Observatory. The time taken to obtain one magnetogram was 5 min. The spatial resolution was 1.8“ × 3.6“. In the active region McMath 15508 a new bipolar spot group formed westward of the existing sunspot group on September 1; the next day the main sunspots had penumbras, and on September 3 the new sunspot group reached a maximum area and began decaying thereafter.

scholarly journals Record-breaking Coronal Magnetic Field in Solar Active Region 12673

2019 ◽  
Vol 880 (2) ◽  
pp. L29 ◽  
Author(s):  
Sergey A. Anfinogentov ◽  
Alexey G. Stupishin ◽  
Ivan I. Mysh’yakov ◽  
Gregory D. Fleishman
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Coronal Magnetic Field ◽  
Solar Active Region

scholarly journals TWIST AND CONNECTIVITY OF MAGNETIC FIELD LINES IN THE SOLAR ACTIVE REGION NOAA 10930

2011 ◽  
Vol 738 (2) ◽  
pp. 161 ◽  
Author(s):  
S. Inoue ◽  
K. Kusano ◽  
T. Magara ◽  
D. Shiota ◽  
T. T. Yamamoto
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Solar Active Region ◽  
Active Region Noaa ◽  
Region Noaa ◽  
Field Lines

scholarly journals Magnetic Configuration and Evolution in a Solar Active Region

2001 ◽  
Vol 203 ◽  
pp. 294-296
Author(s):  
Y. Liu ◽  
H. Zhang
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Magnetic Reconnection ◽  
Solar Atmosphere ◽  
Solar Active Region ◽  
Magnetic Configuration ◽  
Magnetic Helicity ◽  
Space Satellite ◽  
The Magnetic Field

We present results of the analysis of NOAA 8668, which was observed successively by space satellite (SOHO) and ground-based observatories (BBSO, Huairou). The combined observation offers us a good example of a region observed from low to high solar atmosphere. Several flares and a sigmoid filament were observed in the AR, and we observed the sigmoid filament from its birth to disintegration. The configuration of the magnetic field of the AR changed quickly as well as the loops. From EIT movies, we can even judge the sign of the sigmoid filament's magnetic helicity. The forming and heating of the loops were the result of magnetic reconnection, and the corona seemed heated when the loops became opened.

Influence of a solar active region on the interplanetary magnetic field

Solar Physics ◽  
1968 ◽  
Vol 5 (2) ◽  
pp. 240-256 ◽  
Author(s):  
Kenneth H. Schatten ◽  
Norman F. Ness ◽  
John M. Wilcox
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Interplanetary Magnetic Field ◽  
Solar Active Region
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