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		| Paper: | 
		Realtime Alerts of the Transient Sky on Mobile Devices | 
	 
	
		| Volume: | 
		535, Astronomical Data Analysis Software and Systems XXXI | 
	 
	
		| Page: | 
		159 | 
	 
	
		| Authors: | 
		Reichherzer, P.; Schussler, F.; Lefranc, V.; Alkan, A.; Tjus, J. B. | 
	 
	
	
		| Abstract: | 
		Follow-up observations of transient events are crucial in multi-messenger astronomy. We present Astro-COLIBRI as a tool that informs users about flaring events in real-time via push notifications on their mobile phones, thus contributing to enhanced coordination of follow-up observations. We show the software’s architecture that comprises a REST API, both a static and a real-time database, a cloud-based alert system, as well as a website and apps for iOS and Android as clients for users. The latter provide a graphical representation with a summary of the relevant data to allow for the fast identification of interesting phenomena along with an assessment of observing conditions at a large selection of observatories around the world in real-time. | 
	 
	
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