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Timing An X-ray Pulsar
This activity asks students to analyze both the light curve from a pulsar in the crab nebula and the Fourier Transform of the light curve. From this students must find the period of the light intensity, determine the...
Determining Red-Shift in a Receding Star
This activity introduces students to the concepts of the redshift of a receding star. Students will learn about the properties of light, the Doppler effect, and also about Hubble's discovery of the expansion of the...
Anglo-Australian Observatory: Astronomical Images
These collection of images taken form the Anglo-Australian Observatory are organized according to object type, the telescope that took it, whether it was CCD imaging, or whether it was a new photographic image. The...
Spectra is a website illustrating how astronomers use spectra to understand what stars are made of, their structures, and their evolution. The page begins with an introduction to the electromagnetic spectrum and then...
'Magnetars', Soft Gamma Repeaters and Very Strong Magnetic Fields
This site describes soft gamma repeaters. The author, Robert C. Duncan of the University of Texas at Austin, explains how these strange, physically-extreme stars form, and why they emit steadily pulsating X-rays with...
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