Triangle for the entropic index q of non - extensive statistical mechanics observed by Voyager 1 in the distant heliosphere
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چکیده
Triangle for the entropic index q of non-extensive statistical mechanics observed by Voyager 1 in the distant heliosphere Abstract Tsallis [Physica A 340 (2004) 1] identified a set of numbers, the ''q-triplet'' {q stat , q sen , q rel }, for a 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 ¼ 1:75 AE 0:06, q sen ¼ À0:6 AE 0:2, and q rel ¼ 3:8 AE 0:3.
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