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		| Paper: | 
		TeV γ-ray Flux Variability of Markarian 501 | 
	 
	
		| Volume: | 
		159, BL Lac Phenomenon | 
	 
	
		| Page: | 
		239 | 
	 
	
		| Authors: | 
		Quinn, John | 
	 
	
	
		| Abstract: | 
		Markarian 501 was discovered as a source of very high energy gamma-rays by the Whipple Collaboration in Spring 1995. A database spanning four years of frequent observations is now available. The data have been scanned for flux variability on timescales ranging from years to minutes. Rapid variability would indicate a relatively compact emission region and may provide constraints on emission models. Evidence for significant variability on timescales as short as a few hours has been found. The results of this analysis will be presented. | 
	 
	
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