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44 lines
1.1 KiB
Plaintext
44 lines
1.1 KiB
Plaintext
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time-domain techniques provide average time-lag
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more information is contained
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opticla analyses gives avg time-lag between driving and repreoccessing light curve
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more information in the light curves than just the average time lag
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X-ray astornomers have developed technique to get time-lag as a function of freq. or time scales
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We want to be the first people to apply this technique to optical curves
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standard fourier technique:
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astronomers using CC techniques to check corrleation of light curves
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using fourier techniques to learn if time-delay is different as a function of time scales/freq.
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taking a fourier transform:
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each sin and cos has a power and aphse, for each fourier frequency
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two light curves, each has a power and phase set, and the phase different as the time-lag
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so can figure out the time-lag at each fourier frequency
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X-ray data is evenly distributed
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optical data is not evenly distributed
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- maybe because of weather
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certain x-ray telescopes have gappy data because of low-earth orbit
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power in the fourier techniques, more information than the cross-correlation curve
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