Solar flare statistics with a one-dimensional MHD model

被引：33

作者：

Galtier, S ^{[1
]}

Pouquet, A ^{[1
]}

机构：

[1] Observ Cote Azur, CNRS UMR 6529 Cassini, F-06304 Nice 4, France

来源：

SOLAR PHYSICS | 1998年 / 179卷 / 01期

关键词：

D O I：

10.1023/A:1005056102064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The dynamics of dissipative events in coronal loops is modeled with the compressible MHD equations in one space dimension in slab geometry, with a forcing that mimics the footpoint motions. Using a set of numerical simulations, the statistics of strong velocity and magnetic field gradients that develop, leading to a bursty dissipation, are analyzed. Agreement with existing observations of X-ray solar flares obtains concerning the power-law distribution of the luminosity histogram, including when the dynamics are simplified to that of the Burgers equation; in that latter case, this allows for recasting the analysis in terms of avalanche-type models.

引用

页码：141 / 165

页数：25

共 63 条

[1] SELF-ORGANIZED CRITICALITY - AN EXPLANATION OF 1/F NOISE [J].

BAK, P ;

TANG, C ;

WIESENFELD, K .

PHYSICAL REVIEW LETTERS, 1987, 59 (04) :381-384

[2] DYNAMICS OF DECAYING TWO-DIMENSIONAL MAGNETOHYDRODYNAMIC TURBULENCE [J].

BISKAMP, D ;

WELTER, H .

PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1989, 1 (10) :1964-1979

[3]

BRACHET M, 1990, CR ACAD SCI II, V311, P775

[4]

Braginskii S. I., 1965, REV PLASMA PHYS, V1, P205, DOI DOI 10.1088/0741-3335/47/10/005

[5]

BREKKE P, 1997, RAPID TEMPORAL VARIA

[6]

Chiuderi C., 1993, ESA, P25

[7] FREQUENCY-DISTRIBUTIONS AND CORRELATIONS OF SOLAR-X-RAY FLARE PARAMETERS [J].

CROSBY, NB ;

ASCHWANDEN, MJ ;

DENNIS, BR .

SOLAR PHYSICS, 1993, 143 (02) :275-299

[8]

CROSBY NB, 1996, THESIS U PARIS 7

[9] ON THE DYNAMICS OF TURBULENT TRANSPORT NEAR MARGINAL STABILITY [J].

DIAMOND, PH ;

HAHM, TS .

PHYSICS OF PLASMAS, 1995, 2 (10) :3640-3649

[10] Energy release in a turbulent corona [J].

Einaudi, G ;

Velli, M ;

Politano, H ;

Pouquet, A .

ASTROPHYSICAL JOURNAL, 1996, 457 (02) :L113-&

← 1 2 3 4 5 6 7 →