CACR Seminar: “Modern Time Series Analysis of Three Cycles of Solar Chromospheric Activity”

“Modern Time Series Analysis of Three Cycles of Solar Chromospheric Activity”
Jeff Scargle
NASA Ames; Distinguished Visiting Scholar, Keck Institute for Space Studies

Thursday Oct 6
11AM
100 Powell-Booth

Astronomical programs such as NASA’s Kepler Mission, Caltech’s Catalina Real-Time Transient Survey and Palomar Transient Factory, plus many other all-sky photometric surveys — past, present and future — demand efficient, automatic methods for extracting information from time series data.  I will describe algorithms for standard and novel analysis for:

* any data mode (events, counts in bins, point measurements with errors, etc.)
* time, frequency, and time-frequency domains
* auto- and cross- modes for single and multiple time series

Selected application examples will focus on three and a half decades of data from the NSO/AFRL/Sac Peak K-line monitoring program.  Power spectrum and time-frequency analysis elucidates the solar cycle and an underlying random process, and reveals a new periodicity possibly connected with internal solar MHD activity.