Discuss about the radiation from stellar objects, especially in detail about our sun radiation spectrumand compare with other stars. Estimate the sun’s temperature based on the peakemittedwavelength. Also predict the colour ofstar’s having following temperatures: (i)20000K, (ii)18000K, (iii)4000K.
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Radiation. The energy produced by stars, a product of nuclear fusion, radiates to space as both electromagnetic radiation and particle radiation. The particle radiation emitted by a star is manifested as the stellar wind, which streams from the outer layers as electrically charged protons and alpha and beta particles.
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