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  • 21 Aug, 2019

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File:GW170814 Signal.png
Middle row: Time-frequency representation of the strain data. The brighter a given pixel in any of the three 2D-maps, the larger the signal at this particular time and frequency with respect to the expected noise level. Note the characteristic "chirp" pattern of increasing frequency with time.

Bottom row: Strain time series with the best waveforms selected by the matched filtering (black solid curves) and unmodeled search methods (gray bands) superimposed.
Date Source http://ligo.org/science/Publication-GW170814/index.php
 
This plot was created with Matplotlib.
Author LIGO Scientific Collaboration and Virgo Collaboration

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27 September 2017

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