DOI: 10.1088/1361-6382/aa9cad Python Open-source Waveform ExtractoR: An open source, python package to monitor and post-process numerical relativity simulations Author(s) : Daniel Johnson <dsjohns2@illinois.edu> E. A. Huerta <elihu@illinois.edu> Roland Haas <rhaas@ncsa.illinois.edu> Copyright : (c) 2017 The Board of Trustees of the University of Illinois Maintainer(s): Daniel Johnson, E. A. Huerta, Roland Haas License : NCSA 1. Purpose POWER is an open source, python package to monitor the status and progress of numerical relativity simulations, and to post-process the data products of these simulations to compute the gravitational wave strain at future null infinity.