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Open Access Publications from the University of California

Intermediate palomar transient factory: Realtime image subtraction pipeline

  • Author(s): Cao, Y
  • Nugent, PE
  • Kasliwal, MM
  • et al.

© 2016. The Astronomical Society of the Pacific. All rights reserved. A fast-turnaround pipeline for realtime data reduction plays an essential role in discovering and permitting followup observations to young supernovae and fast-evolving transients in modern time-domain surveys. In this paper, we present the realtime image subtraction pipeline in the intermediate Palomar Transient Factory. By using highperformance computing, efficient databases, and machine-learning algorithms, this pipeline manages to reliably deliver transient candidates within 10 minutes of images being taken. Our experience in using high-performance computing resources to process big data in astronomy serves as a trailblazer to dealing with data from large-scale time-domain facilities in the near future.

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