Rapid X-ray Variability of the BL Lacertae Object PKS 2155-304

Abstract

(Abridged) We present a detailed power density spectrum and cross-correlation analysis of the X-ray light curves of the BL Lac object PKS 2155-304, observed with BeppoSAX in 1997 and 1996, aimed at exploring the rapid variability properties and the inter-band cross correlations in the X-rays. We also perform the same analysis on the (archival) X-ray light curve obtained with ASCA in 1994.

47 pages, 11 figures, AAS Latex macros V4.0, accepted for publication in the Astrophysical Journal

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