From 91f75765e4f42c1293083e35afebb5fe3c4fd4e2 Mon Sep 17 00:00:00 2001 From: caes Date: Tue, 7 Jun 2016 02:53:57 -0400 Subject: [PATCH] added meeting notes --- pres/intronotes | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 pres/intronotes diff --git a/pres/intronotes b/pres/intronotes new file mode 100644 index 0000000..2dd7269 --- /dev/null +++ b/pres/intronotes @@ -0,0 +1,43 @@ +time-domain techniques provide average time-lag + +more information is contained + +opticla analyses gives avg time-lag between driving and repreoccessing light curve + +more information in the light curves than just the average time lag + +X-ray astornomers have developed technique to get time-lag as a function of freq. or time scales + +We want to be the first people to apply this technique to optical curves + + + + +standard fourier technique: + + astronomers using CC techniques to check corrleation of light curves + + using fourier techniques to learn if time-delay is different as a function of time scales/freq. + + taking a fourier transform: + + each sin and cos has a power and aphse, for each fourier frequency + + two light curves, each has a power and phase set, and the phase different as the time-lag + + so can figure out the time-lag at each fourier frequency + +X-ray data is evenly distributed + +optical data is not evenly distributed + + - maybe because of weather + +certain x-ray telescopes have gappy data because of low-earth orbit + + + + + +power in the fourier techniques, more information than the cross-correlation curve +