1998/11/16 by A. Treves, Treves, A., Y. H. Zhang +17
Engineering · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Particle Accelerators and Free-Electron Lasers #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9811244
4 pages, Latex, 4 PostScript figures, to appear in the Proceedings of the "BL Lac Phenomenon" Meeting, held in Turku, Finland, 1998 June 22-26, ed. Leo Takalo
arxiv created 1998/11/16 · openalex publication_date 1998/11/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
PKS 2155-304 is one of the prototypes of BL Lac objects. Its spectral energy distribution is known from the radio to the TeV band and has two peaks, one in the soft X-rays and the other in the TeV region. These may be interpreted within the synchrotron self-Compton model, which attributes the first peak to synchrotron radiation of electrons, which also produce the second peak via Compton scattering of the same synchrotron photons. The emission is relativistically boosted in the observer direction. A way of testing the model and characterizing its geometrical and kinematical properties is through the study of correlated variability in different bands. Here we report on the search and accurate study of lags in the X-ray light curves obtained with the BeppoSAX satellite during the performance verification phase in November 1996 and compare the results with the findings of a similar analysis applied to the November 1997 BeppoSAX and 1994 ASCA data.