Ein Quasar ist der aktive Kern einer Galaxie, der im sichtbaren Bereich des Lichtes nahezu . An ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift In: Nature. Band , Nr. , Februar , S. –5. Skip to the Questions. Black holes sound like they're straight out of a science fiction story: objects so dense that nothing in the universe can. Quasars. Astronomers first knew they had a mystery on their hands in the This artist's concept illustrates a quasar, or feeding black hole.
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Intermediate Why are accretion disks flat? The Power Source of Quasars Quasars are by far the brightest objects in the universe. Relativity, Gravitation and Cosmology Illustrated ed. Where did the quasars go? Although the mass of a typical quasar black hole is very large, its radius is only about as large as our solar system. Intermediate Why are the Moon and Sun sometimes orange or red?
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Radio-loud quasars can also produce X-rays and gamma rays by inverse Compton scattering of lower-energy photons by the radio-emitting electrons in the jet. Most quasars are brightest in their rest-frame near-ultraviolet wavelength of Because quasars are distant objects, any light which reaches the Earth is redshifted due to the metric expansion of space. Intermediate What is happening just around the black hole in the center of the Milky Way? Measurements taken by Cyril Hazard and John Bolton during one of the occultations using the Parkes Radio Telescope allowed Maarten Schmidt to optically identify the object and obtain an optical spectrum using the inch Hale Telescope on Mount Palomar. It was suggested, for example, that the redshift of quasars was not due to the expansion of space but rather to light escaping a deep gravitational well. Fast motions strongly indicate a large mass.