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Power spectral density analysis of hard X-ray emission of Cyg X-1 (1981)

Frontera, F. ; Fuligni, F.

Springer

Space science reviews 30 (1981), S. 379-384

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ISSN: 1572-9672

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We report on results of analysis sperformed on data of three balloon observations of Cyg X-l in the range 20-200 keV. Evidence of periodic, even if not stable, pulsations were previously obtained at about 0.058 Hz. The continuous power spectrum, still showing a broad peak around the above frequency, can be explained on the basis of a model, similar to the shot noise one, where the single shot is replaced by a short sequence of equispaced pulses with a decaying amplitude. Such a model could also explain the bursting activity observed at lower energies.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01246050

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