کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10480899 933005 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonextensivity and entropy of astrophysical sources
ترجمه فارسی عنوان
هیچکسستیویت و آنتروپی منابع استروفی فیزیکی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی
We study the X-ray intensities of 142 light curves of cataclysmic variables, galaxies, pulsars, supernova remnants and other X-ray sources present in the public data collected by the instrument All Sky Monitor on board the satellite Rossi X-ray Timing Explorer. We show that the X-ray light curves coming from astrophysical systems obey Tsallis's q-Gaussian distribution as probability density. This fact strongly suggests that these astrophysical systems behave in a non-extensive manner. Furthermore, the q entropic indices for these systems were obtained and they provide an indication of the nonextensivity degree of each of these astrophysical systems. The q-value increases for systems if the Tsallis entropy decreases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 392, Issue 23, 1 December 2013, Pages 6079-6083
نویسندگان
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