Triangle for the entropic index q of non-extensive statistical mechanics observed by Voyager 1 in the distant heliosphere

被引：99

作者：

Burlaga, LF ^{[1
]}

Viñas, AF ^{[1
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Lab Solar & Space Phys, Greenbelt, MD 20771 USA

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2005年 / 356卷 / 2-4期

关键词：

nonlinear dynamics; nonextensive statistical mechanics; metastable states; mixing; weak chaos; q-triplet; heliospheric magnetic field;

D O I：

10.1016/j.physa.2005.06.065

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Tsallis [Physica A 340 (2004) 1] identified a set of numbers, the "q-triplet" = {q(stat),q(sen),q(rel)} system described by nonextensive statistical mechanics. The deviation of the q's from unity is a measure of the departure from thermodynamic equilibrium. We present observations of the q-triplets derived from two sets of daily averages of the magnetic field strength B observed by Voyager 1 in the solar wind near 40 AU during 1989 and near 85 AU during 2002, respectively. The results for 1989 do not differ significantly from those for 2002. We find q(stat) = 1.75 +/- 0.06, q(sen), = -0.6 +/- 0.2, and q(rel) = 3.8 +/- 0.3.

引用

页码：375 / 384

页数：10

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