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Unformatted text preview: o whats driving the activity is a supermassive black hole o Radio galaxies often 2 lobes of radio emission, far from nucleus double-radio lobes usually associated with elliptical galaxies Jets of particles and radiation shot out over hundreds of thousands of light years o Gas from active nuclei shooting around at more than 10000 km/s o Stars are not responsible for the activity in the nuclei supermassive black holes at the center are probably responsible Quasars o some blue stars are very bright at radio wavelengths o optical spectra is bizarre with huge, broad emission lines o It was first thought that these were stars o It was found that one of the quasars had the spectrum of hot hydrogen with a 16% redshift Redshift is huge leading to first correctly identified quasar...
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This note was uploaded on 04/04/2008 for the course ASTRO C 10 taught by Professor Filippenko during the Fall '08 term at University of California, Berkeley.
- Fall '08