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|Title: ||Fluctuation analysis of stellar x-ray binary systems|
|Other Titles: ||Physical Review E|
|Authors: ||Nogueira Júnior, E.|
Moret, M. A.
Zebende, G. F.
Pereira, M. G.
|Issue Date: ||2003|
|Abstract: ||We study time series of x-ray sources of 129 stellar binary systems present in the public data collected by the instrument All Sky Monitor on board of the satellite Rossi X-Ray Timing Explorer. The light time series was analyzed by applying detrended fluctuation analysis to estimate the long-range power-law correlation exponents α. The scaling exponent was calculated for all systems and its value indicated a signature of each kind of system, i.e., whether flare takes place (with α=1.22) or not (with α=0.64). As a consequence, our results may identify the stability of the systems from the scaling exponent α value, for instance, if α∼0.5 (white noise) the system is stable and unstable when α≠0.5 (long-range power-law correlation).|
|Description: ||p. 1-4|
|Appears in Collections:||Artigos Publicados em Periódicos (FIS)|
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