SIGN SINGULARITY AND FLARES IN SOLAR ACTIVE REGION NOAA 11158

被引：15

作者：

Sorriso-Valvo, L. ^{[1
,2
]}

De Vita, G. ^{[1
,3
]}

Kazachenko, M. D. ^{[2
]}

Krucker, S. ^{[2
,4
]}

Primavera, L. ^{[3
]}

Servidio, S. ^{[3
]}

Vecchio, A. ^{[5
]}

Welsch, B. T. ^{[2
]}

Fisher, G. H. ^{[2
]}

Lepreti, F. ^{[3
]}

Carbone, V. ^{[3
]}

机构：

[1] CNR, IMIP, UOS LICRYL Cosenza, I-87036 Arcavacata Di Rende, Italy

[2] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[3] Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, Italy

[4] Univ Appl Sci & Arts Northwestern Switzerland, Sch Engn, Inst Technol 4D, CH-5210 Windisch, Switzerland

[5] INGV, Sede Cosenza, I-87036 Arcavacata Di Rende, Italy

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 801卷 / 01期

基金：

美国国家科学基金会;

关键词：

Sun: flares; Sun: magnetic fields; turbulence; CORONAL MASS EJECTIONS; MAGNETIC-FIELD; CURRENT HELICITY; MAGNETOHYDRODYNAMIC TURBULENCE; ENERGY-SPECTRA; CANCELLATION; DYNAMICS; INTERMITTENCY; RECONNECTION; EVOLUTION;

D O I：

10.1088/0004-637X/801/1/36

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Solar Active Region NOAA 11158 has hosted a number of strong flares, including one X2.2 event. The complexity of current density and current helicity are studied through cancellation analysis of their sign-singular measure, which features power-law scaling. Spectral analysis is also performed, revealing the presence of two separate scaling ranges with different spectral index. The time evolution of parameters is discussed. Sudden changes of the cancellation exponents at the time of large flares. and the presence of correlation with Extreme-Ultra-Violet and X-ray flux. suggest that eruption of large flares can be linked to the small-scale properties of the current structures.

引用

页数：13

共 50 条

[1] Magnetic structure of solar active region NOAA 11158
Vemareddy, P.
Ambastha, A.
Wiegelmann, T.
BULLETIN OF THE ASTRONOMICAL SOCIETY OF INDIA, 2013, 41 (03): : 183 - 193
[2] ON THE ROLE OF ROTATING SUNSPOTS IN THE ACTIVITY OF SOLAR ACTIVE REGION NOAA 11158
Vemareddy, P.
Ambastha, A.
Maurya, R. A.
ASTROPHYSICAL JOURNAL, 2012, 761 (01):
[3] Flux emergence in the solar active region NOAA 11158: the evolution of net current
Panditi Vemareddy
Parameswaran Venkatakrishnan
Solipuram Karthikreddy
ResearchinAstronomyandAstrophysics, 2015, 15 (09) : 1547 - 1558
[4] Flux emergence in the solar active region NOAA 11158: the evolution of net current
Vemareddy, Panditi
Venkatakrishnan, Parameswaran
Karthikreddy, Solipuram
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 15 (09) : 1547 - 1558
[5] Sunspot Rotation and the M-Class Flare in Solar Active Region NOAA 11158
Li, Alexander
Liu, Yang
SOLAR PHYSICS, 2015, 290 (08) : 2199 - 2209
[6] Sunspot Rotation and the M-Class Flare in Solar Active Region NOAA 11158
Alexander Li
Yang Liu
Solar Physics, 2015, 290 : 2199 - 2209
[7] TEMPORAL EVOLUTION OF THE MAGNETIC TOPOLOGY OF THE NOAA ACTIVE REGION 11158
Zhao, Jie
Li, Hui
Pariat, Etienne
Schmieder, Brigitte
Guo, Yang
Wiegelmann, Thomas
ASTROPHYSICAL JOURNAL, 2014, 787 (01):
[8] Solar flares in active region NOAA 9042 on 21 June 2000
Rudawy, P
Rompolt, B
Falewicz, R
Dabrowski, B
Siarkowski, M
SOLAR VARIABILITY: FROM CORE TO OUTER FRONTIERS, VOLS 1 & 2, 2002, 506 : 741 - 744
[9] MAGNETIC STRUCTURE PRODUCING X- AND M-CLASS SOLAR FLARES IN SOLAR ACTIVE REGION 11158
Inoue, S.
Hayashi, K.
Shiota, D.
Magara, T.
Choe, G. S.
ASTROPHYSICAL JOURNAL, 2013, 770 (01):
[10] THE MAGNETIC SYSTEMS TRIGGERING THE M6.6 CLASS SOLAR FLARE IN NOAA ACTIVE REGION 11158
Toriumi, Shin
Iida, Yusuke
Bamba, Yumi
Kusano, Kanya
Imada, Shinsuke
Inoue, Satoshi
ASTROPHYSICAL JOURNAL, 2013, 773 (02):

← 1 2 3 4 5 →