Clues On The Jet Structure From X-ray/TeV Campaigns On The Highest State Of PKS 2155-304 And The Lowest State Of PKS 2005-489.

Details Clues On The Jet Structure From X-ray/TeV Campaigns On The Highest State Of PKS 2155-304 And The Lowest State Of PKS 2005-489. Clues On The Jet Structure From X-ray/TeV Campaigns On The Highest State Of PKS 2155-304 And The Lowest State Of PKS 2005-489.

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.3327c&link_type=abstract

American Astronomical Society, HEAD meeting #11, #33.27; Bulletin of the American Astronomical Society, Vol. 41, p.710

Physics

Scientific paper

Simultaneous Chandra/HESS observations were performed in the night of July 29-30, 2006, on PKS 2155-304, during its highest outburst in summer 2006.
They revealed for the first time in an HBL a large Compton dominance, very high gamma-ray luminosities and a cubic relation between X-ray and gamma-ray flux variations, with weak optical variability. Homogeneous one-zone SSC scenarios do not provide a consistent explanation, indicating that a single particle population cannot be responsible for both peaks of the SED during this night. The data indicate the emergence of a new component in the SED, strongly Compton-dominated, which must be either very compact or external-Compton dominated, likely due to radiative interplay between different parts of the jet. New evidence for a multi-component structure in the SED at high electron energies is also found in PKS 2005-489, from dedicated XMM, RXTE and HESS observations between 2004 and 2006. These new, recently published results will be presented and discussed in the context of blazars physics.

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