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Unformatted text preview: that has the accuracy of a telescope that is as big as they are far apart. ALMA. Meant for high frequency radio True color vs. false color: arbitrary colors assigned to infrared = false Continuum is the spectrum of radio HI: neutral hydrogen most common gas in universe. Wavelength = 21 cm HII: ionized hydrogen Spin flip transition Radio Emission processes: 1. Blackbody. Anything with temperature 2. HI (cold, neutral hydrogen). Spectral line only one wavelength...
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- Fall '08