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		| Paper: | 
		Probing the Type Ia Environment with Light Echoes . | 
	 
	
		| Volume: | 
		342, 1604-2004: Supernovae as Cosmological Lighthouses | 
	 
	
		| Page: | 
		229 | 
	 
	
		| Authors: | 
		Patat, F. | 
	 
	
	
		| Abstract: | 
		In general, Light Echoes are beautiful, rather academical and therefore unavoidably useless phenomena. In some cases, however, they can give interesting information about the environment surrounding the exploding star. After giving a brief introduction to the subject, I describe its application to the case of Type Ia Supernovae and discuss the implications for progenitors and their location within the host galaxies. | 
	 
	
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