I am researching the application of Fourier transform in radio data processing.(adsbygoogle = window.adsbygoogle || []).push({});

So when I took a time series of a pulsar (amplitude v. time) and converted the time series into amplitude v. frequency, I found two peak frequencies like these

http://http://arecibo.tc.cornell.edu/legacypulsardata/ImageView.aspx?file_id=34 [Broken]

but when I researched the pulsar it's period was stated as 0.06 seconds (so it's spin frequency would be 16 Hz) as stated here:

http://www.wolframalpha.com/entities/pulsars/psr_j2235+1506/8t/gd/bw/ [Broken]

What are the two peak frequencies then? And why are they different from the spin frequency stated?

Thank You,

I am a high school student, so I am limited in understanding Fourier.

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# Pulsar Frequency Question and Fast Fourier Transform

Can you offer guidance or do you also need help?

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