Energy dependent X-ray variability of the TEV blazars PKS 2155-304 and MKN 421

Details Energy dependent X-ray variability of the TEV blazars PKS 2155-304 and MKN 421 Energy dependent X-ray variability of the TEV blazars PKS 2155-304 and MKN 421

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..599.1019z&link_type=abstract

X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background. Edited by Nicholas E. White, Giuseppe Malaguti, and G

Astronomy and Astrophysics

Astronomy

Active And Peculiar Galaxies And Related Systems, X-Ray Sources, X-Ray Bursts

Scientific paper

We present the X-ray variability properties of the TeV blazars PKS 2155-304 and MKN 421 as observed with BeppoSAX and ASCA. The minimum timescales of ~ 1000 s are suggested. For PKS 2155-304 we found that the soft X-ray lags (relative to higher energies) are inversely correlated with the source intensity, i.e. the lag is longer when the source is fainter. In April 1998 a flare of MKN 421 was detected, during which higher energy X-rays lagged lower energy ones by ~ 2500 s. The origin of these lags is briefly discussed. .

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