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

L.F. Burlaga and A. F.-Viñas

Physica A: Statistical Mechanics and its Applications, 2006, vol. 361, issue 1, 173-179

Abstract: Tsallis [Physica A 340 (2004) 1) identified a set of numbers, the “q-triplet” ≡ {qstat, qsen, qrel}, for a system described by non-extensive 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 40A.U. during 1989 and near 85A.U. during 2002, respectively. The results for 1989 do not differ significantly from those for 2002. We find qstat=1.75±0.06, qsen=-0.6±0.2, and qrel=3.8±0.3.

Keywords: Non-linear dynamics; Non-extensive statistical mechanics; Metastable states; Mixing; Weak chaos; q-Triplet; Heliospheric magnetic field (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:361:y:2006:i:1:p:173-179

DOI: 10.1016/j.physa.2005.06.097

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Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

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