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

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Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology

Part of the book series: ESO ASTROPHYSICS SYMPOSIA ((ESO))

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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.

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Authors and Affiliations

  1. Università dell’Insubria, via Valleggio 11, I-22100, Como, Italy

    You Hong Zhang & Aldo Treves

  2. SISSA/ISAS, via Beirut 2-4, I-34014, Trieste, Italy

    Annalisa Celotti

  3. IFCTR/CNR, via Bassini 15, I-20133, Milano, Italy

    Lucio Chiappetti

  4. CASS, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0424, USA

    Giovanni Fossati

  5. OAB, via Bianchi 46, I-22055, Merate, Italy

    Gabriele Ghisellini & Gianpiero Tagliaferri

  6. OAB, via Brera 28, I-20121, Milano, Italy

    Laura Maraschi & Fabrizio Tavecchio

  7. OAT, via G.B. Tiepolo 11, I-34131, Trieste, Italy

    Elena Pian

Authors
  1. You Hong Zhang
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  2. Aldo Treves
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  3. Annalisa Celotti
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  4. Lucio Chiappetti
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  5. Giovanni Fossati
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  6. Gabriele Ghisellini
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  7. Laura Maraschi
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  8. Elena Pian
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  9. Gianpiero Tagliaferri
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  10. Fabrizio Tavecchio
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Editor information

Marat Gilfanov Rashid Sunyeav Eugene Churazov

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Zhang, Y.H. et al. X-Ray Variability of Blazar PKS 2155-304: Probing the Dynamics of the Jet. In: Gilfanov, M., Sunyeav, R., Churazov, E. (eds) Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology. ESO ASTROPHYSICS SYMPOSIA. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10856495_47

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  • DOI: https://doi.org/10.1007/10856495_47

  • Published:

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-43769-7

  • Online ISBN: 978-3-540-48014-3

  • eBook Packages: Springer Book Archive

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