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, Entdeckung und · Physikalische · Vereinheitlichtes Modell · Blazar. Before Hubble, quasars were considered to be isolated star-like objects of a mysterious nature. Hubble has observed several quasars and found that they all reside. Astronomers using Hubble found that Markarian , the nearest galaxy that hosts a quasar, is powered by two central black holes furiously whirling about each.
Durch die starke Rotverschiebung aufgrund der Expansion des Universums wurden Quasare als sehr weit entfernte Objekte erkannt. The black hole blows a huge bubble of hot gas, light-years across or twice as large and tens of times more powerful than the other such microquasars. Retrieved 19 June The high resolution of Hubble made it possible to see the effects of the gravitational attraction of some of these objects on their surroundings. The high resolution of Hubble made it possible to see the effects of the gravitational attraction of some of these objects on their surroundings. Ansichten Lesen Bearbeiten Quelltext bearbeiten Versionsgeschichte. The disk of dust and gas accreting around a million solar-mass black hole in NGC Retrieved 19 June The processes by which these jets are formed are not well understood, but seem to require magnetic fields - whose presence causes instabilities in the accretion disk that allow material to fling upwards - as well as rapidly rotating black holes, which can feed some of their energy to the magnetic field and to the jet material itself. Intermediate If light has no mass, then what draws it into a black hole? Advanced Why do airplanes take longer to fly West than East? A "binary quasar", may be closely linked gravitationally and form a pair of interacting galaxies. Quasars can be detected over the entire observable electromagnetic spectrum including radio , infrared , visible light , ultraviolet , X-ray and even gamma rays. More than , quasars are known, most from the Sloan Digital Sky Survey. Intermediate Why is Neptune still considered a planet when Pluto crosses its orbit? A stream of electrons ejected from the centre of galaxy M Annual Review of Astronomy and Astrophysics. Intermediate What would happen if a supermassive black hole came close to the Earth? Contact Subscribe to Hubble News Site Map.