A Periodogram of Every Kepler Target and Quarter/Channel-Averaged Periodograms

Studying photometric time series in the frequency domain can serve as a means of detecting rotational modulations, measuring asteroseismic modes and even detecting short-period transiting planets. To our knowledge, there is no prior archive of the NASA Kepler Mission's power spectra and so we present one here to aid the community in searching for such effects. 2,594,616 individual periodograms are computed using Welch’s method and a Nuttall window, where we provide a unique periododogram for each quarter (up to 16) for each star (196,791 in total). Additionally, we normalize the periodograms in the high-frequency end and combine them into channel- and quarter-averaged spectra to track common instrumental modes occurring onboard the telescope, with a particularly curious feature at 80 minutes observed. File descriptions are provided in the readme.txt file.