|   | 
				
					
	
		  | 
	 
	
		| Paper: | 
		Magnetic Field Structures in Parsec Scale Jets: Oblique Shocks | 
	 
	
		| Volume: | 
		300, Radio Astronomy at the Fringe | 
	 
	
		| Page: | 
		143 | 
	 
	
		| Authors: | 
		Aller, H.D.; Aller, M.F.; Hughes, P.A. | 
	 
	
	
		| Abstract: | 
		A selected group of ten highly variable extragalactic sources was observed with the VLBA at 15 and 43 GHz, on nine epochs spanning a 30-month period; five of these objects were also observed at 8.0 and 22 GHz. All objects exhibited variability; and we present here the evolution of the observed polarization features. We interpret the temporal changes of the polarization in terms of oblique shocks developing in relativistic jets. | 
	 
	
		| 
			
			
		 | 
	 
	
		  | 
	 
 
					 
				 | 
				  |