FRACTAL ANALYSIS OF X-RAY-EMISSION FROM CENTAURUS X-3 OBSERVED BY GINGA

Citation
R. Kanetake et al., FRACTAL ANALYSIS OF X-RAY-EMISSION FROM CENTAURUS X-3 OBSERVED BY GINGA, Publications of the Astronomical Society of Japan, 46(3), 1994, pp. 235-241
Citations number
23
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
00046264
Volume
46
Issue
3
Year of publication
1994
Pages
235 - 241
Database
ISI
SICI code
0004-6264(1994)46:3<235:FAOXFC>2.0.ZU;2-2
Abstract
X-ray time series data from the 4.8-second binary pulsar Cen X-3 obser ved by Ginga were analyzed. We studied the fractal dimension of the X- ray intensity of the total 1.7-37 keV energy band. The fractal dimensi on of the temporal behavior on time scales greater-than-or-equal-to 4. 8 s is comparatively large (less-than-or-equal-to 7). This implies tha t the variability of this source is characterized by perturbations hav ing a small size compared with the system scale. The existence of a lo wer dimensional (large-scale) motion with a time scale of 500 s is sug gested.