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		| Paper: | 
		Signature of Stochastic Acceleration and Jet Energetics in
 the X-ray Spectrum of Mrk 421 | 
	 
	
		| Volume: | 
		427, Accretion and Ejection in AGN: a Global View | 
	 
	
		| Page: | 
		215 | 
	 
	
		| Authors: | 
		Tramacere, A.; Giommi, P.; Perri, M.; Verrecchia, F.; Tosti, G. | 
	 
	
	
		| Abstract: | 
		We present the results of a deep spectral analysis of all Swift observations of Mrk 421 between 
 April 2006 and July 2006, when it reached its highest X-ray flux recorded until the end of 2006. 
 We investigate the correlation between the spectral parameters and we find signature of both stochastic
  acceleration and  energetic budget of the jet. | 
	 
	
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