DIFFUSION OF MAGNETIC ELEMENTS IN A SUPERGRANULAR CELL

被引：34
作者：
Giannattasio, F. [1 ]
Stangalini, M. [2 ]
Berrilli, F. [1 ]
Del Moro, D. [1 ]
Bellot Rubio, L. [3 ]
机构：
[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[2] INAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, RM, Italy
[3] Inst Astrofis Andalucia CSIC, E-18080 Granada, Spain
来源：
ASTROPHYSICAL JOURNAL | 2014年 / 788卷 / 02期
关键词：
Sun:; photosphere; LARGE-SCALE MOTIONS; SOLAR; MISSION; WAVES; FLOWS; FIELD; SUN;
D O I：
10.1088/0004-637X/788/2/137
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Small scale magnetic fields (magnetic elements) are ubiquitous in the solar photosphere. Their interaction can provide energy to the upper atmospheric layers, and contribute to heat the solar corona. In this work, the dynamic properties of magnetic elements in the quiet Sun are investigated. The high number of magnetic elements detected in a supergranular cell allowed us to compute their displacement spectrum ((Delta r)(2)) alpha iota(gamma) (with gamma > 0, and iota the time since the first detection), separating the contribution of the network (NW) and the internetwork (IN) regions. In particular, we found gamma = 1.27 +/- 0.05 and gamma = 1.08 +/- 0.11 in NW(at smaller and larger scales, respectively), and. = 1.44 +/- 0.08 in IN. These results are discussed in light of the literature on the topic, as well as the implications for the build-up of the magnetic network.
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页数：5
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