What is a quasar

what is a quasar

Shining so brightly that they eclipse the ancient galaxies that contain them, quasars are distant objects powered by black holes a billion times. Quasars are extremely distant objects in our known universe. They are the furthest objects away from our galaxy that can be seen. Quasars are extremely bright. A quasar (/ˈkweɪzɑːr/) (also quasi-stellar object or QSO) is an active galactic nucleus of very high luminosity. A quasar consists of a supermassive black hole  ‎ Active galactic nucleus · ‎ Accretion disk · ‎ Seyfert galaxy · ‎ Luminosity. what is a quasar

What is a quasar Video

What Is A Quasar? The discovery of quasars Dr Alan Wright tells Patrick Moore about the first quasar. It has an average apparent magnitude of High-resolution images of quasars, particularly from the Hubble Space Telescope , have demonstrated that quasars occur in the centers of galaxies, and that some quasar host galaxies are strongly interacting or merging galaxies. Quasars give off enormous amounts of energy - they can be a trillion times brighter than the Sun! These supermassive black holes swallow matter from its surrounding galaxy at a rate of about 1 solar mass per year. Navigation Main page Contents Featured content Current events Random article Donate to Wikipedia Wikipedia store. In a breakthrough was achieved.

What is a quasar - war also

Durch die starke Rotverschiebung aufgrund der Expansion des Universums wurden Quasare als sehr weit entfernte Objekte erkannt. Many lines of evidence optical viewing of host galaxies, finding 'intervening' absorption lines, gravitational lensing now demonstrate that the quasar redshifts are due to the Hubble expansion, and quasars are in fact as powerful as first thought. An accretion disk is a flat, disk-like structure of gas that rapidly spirals around a larger object, like a black hole, a new star, a white dwarf, etc. As technology continues to enhance our windows to the universe, we may one day fully understand these fantastic lights. Follow her on Twitter at NolaTRedd. Iron quasars show strong emission lines resulting from low ionization iron FeII , such as IRAS Quasars have all the properties of other active galaxies such as Seyfert galaxies , but are more powerful: Keck Observatory Mauna Kea , Hawaii. Several dozen nearby large galaxies, with no sign of a quasar nucleus, have been shown to contain a similar central black hole in their nuclei, so it is thought that all large galaxies have one, but only a small fraction are active with enough accretion to power radiation and so are seen as quasars. Timeline of black hole physics Rossi X-ray Timing Explorer Hypercompact stellar system Gamma-ray burst progenitors Gravity well Black hole starship. Show me the Level 1 version of this page. Quasars' luminosities are variable, with time scales that range from months to hours.

What is a quasar - hinaus

Explicit use of et al. Home Members Guide to Space Carnival Photos Videos Forum Contact Privacy. Content on this page requires a newer version of Adobe Flash Player. Möglicherweise unterliegen die Inhalte jeweils zusätzlichen Bedingungen. It is not to be confused with quasi-star. Studies showed that these quasars lie at the hearts of distant galaxies to dim to be seen by themselves. In , a definite identification of the radio source 3C 48 with an optical object was published by Allan Sandage and Thomas A. In fact, it has been suggested that a quasar could form as the Andromeda Galaxy collides with our own Milky Way galaxy in approximately 3—5 billion years. Text is available under the Creative Commons Attribution-ShareAlike License ; additional terms may apply. Quasars are part of a class of objects known as active galactic nuclei AGN. Galaxies like the Milky Way may once have hosted a quasar that has long been silent. Mitmachen Artikel verbessern Neuen Artikel anlegen Autorenportal Hilfe Letzte Änderungen Kontakt Spenden. Thermodynamics Schwarzschild radius M—sigma relation Event horizon Quasi-periodic oscillation Photon sphere Ergosphere Hawking radiation Penrose process Blandford—Znajek process Bondi accretion Spaghettification Gravitational lens.

0 Gedanken zu „What is a quasar

Schreibe einen Kommentar

Deine E-Mail-Adresse wird nicht veröffentlicht. Erforderliche Felder sind mit * markiert.