A quasar (/ ˈ k w eɪ z ɑːr / KWAY-zar) is an extremely luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is …

類星體 （英語：quasar， / ˈ k w eɪ z ɑːr / ，也以QSO或quasi-stellar object為人所知）是極度明亮的活躍星系核（AGN，active galactic nucleus）。 大多數 星系 的核心都有一個 超大質量黑 …

The energy emitted by a quasar is gravitational energy, created from mass falling onto the accretion disc around the black hole. Quasars are extremely luminous. They were first …

The Twin Quasar is a single quasar whose appearance is distorted by the gravity of another galaxy much closer to Earth along the same line of sight. This gravitational lensing effect is a …

This article contains lists of quasars. More than a million quasars have been observed, [1] so any list on Wikipedia is necessarily a selection of them. Proper naming of quasars are by …

2025年3月19日 · quasar, an astronomical object of very high luminosity found in the centres of some galaxies and powered by gas spiraling at high velocity into an extremely large black …

2024年8月27日 · English: A quasar is a very remote celestial object, typically described as a corrupted galactic nucleus. An artist's impression of a quasar galaxy. From the Hubble Space …

Quasars or quasi-stellar radio sources are the most energetic and distant active galactic nuclei (AGN). The Chandra X-ray image is of the quasar PKS 1127-145, a highly luminous source of …

2024年12月8日 · quasar (plural quasars) An extragalactic object, starlike in appearance, that is among the most luminous and (putatively) the most distant objects in the universe.

3 天之前 · OH 471 is a low polarized quasar but also a high frequency peaker (HFP). [6] It is a radio-loud gamma ray blazar with a central supermassive black hole mass of 9.1 M ʘ and a …