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Real-time photometric identification of transients

Presentation #509.04 in the session “Supernovae 3”.

Published onJan 11, 2021
Real-time photometric identification of transients

Astronomers are facing an unprecedented era of big data, observing more phenomena than humans can possibly visually examine alone. Upcoming large-scale surveys such as the Legacy Survey of Space and Time (LSST) will observe millions of transient alerts each night: two orders of magnitude more than any survey to date. To meet this challenge, we have developed a novel time-series classification tool, RAPID (Real-time Automated Photometric IDentification), capable of quickly classifying multi-channel, sparse, time-series datasets into several astrophysical types. Using a deep recurrent neural network, we present the first method specifically designed to provide early classifications of astronomical transients, identifying transients from within a day of the initial alert, to the full lifetime of a light curve. We have begun running RAPID on the real-time Zwicky Transient Facility (ZTF) survey, and have successfully classified several transients well before peak luminosity. In this talk, I will explain the main parts of our deep learning architecture and describe our approach’s performance on simulated and real data streams.


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