X-Ray Variability of Blazar PKS 2155-304: Probing the Dynamics of the Jet

  • You Hong Zhang
  • Aldo Treves
  • Annalisa Celotti
  • Lucio Chiappetti
  • Giovanni Fossati
  • Gabriele Ghisellini
  • Laura Maraschi
  • Elena Pian
  • Gianpiero Tagliaferri
  • Fabrizio Tavecchio
Conference paper
First Online:
Part of the ESO ASTROPHYSICS SYMPOSIA book series (ESO)

Abstract.

We present temporal and spectral analysis of the X-ray bright blazar PKS 2155-304 observed with BeppoSAX. Power density spectra show strong red noise feature with steep slope of \(\sim 2-3\). Structure functions suggest typical timescale of \(\sim 0.5\) days. Inter-band time lags differ from flare to flare. Peak energies of synchrotron component increase with increasing flux, and complexities of spectral evolution are detected. The implications of our results are discussed in the context of synchrotron cooling model of relativistic electrons accelerated through internal shocks taking place in the jet.

Keywords

Power Density Structure Function Steep Slope Relativistic Electron Peak Energy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Authors and Affiliations

  • You Hong Zhang
    • 1
  • Aldo Treves
    • 1
  • Annalisa Celotti
    • 2
  • Lucio Chiappetti
    • 3
  • Giovanni Fossati
    • 4
  • Gabriele Ghisellini
    • 5
  • Laura Maraschi
    • 6
  • Elena Pian
    • 7
  • Gianpiero Tagliaferri
    • 5
  • Fabrizio Tavecchio
    • 6
  1. 1.Università dell’InsubriaComoItaly
  2. 2.SISSA/ISASTriesteItaly
  3. 3.IFCTR/CNRMilanoItaly
  4. 4.CASS, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0424, USA
  5. 5.OABMerateItaly
  6. 6.OABMilanoItaly
  7. 7.OATTriesteItaly

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