Proper naming of quasars are by Catalogue Entry, Qxxxx±yy using B1950 coordinates, or QSO Jxxxx±yyyy using J2000 coordinates. They may also use the prefix QSR. There are currently …

Type 2 (or Type II) quasars are quasars in which the accretion disc and broad emission lines are highly obscured by dense gas and dust. They are higher-luminosity counterparts of Type 2 Seyfert galaxies.

2021年2月28日 · After decades of intense study, we have another term for these objects: a quasar is a type of active galactic nucleus, or AGN. There are actually many different types of AGNs, each with their...

2023年10月19日 · Quasars are the remarkably bright cores of active galaxies in the distant universe, they are an extreme form of what astronomers call "active galactic nuclei", or AGN …

2024年10月29日 · Quasars are a type of Active Galactic Nucleus (AGN). They are classified by characteristics such as radio emissions and redshift, which measure their distance. …

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 hole.

2022年8月31日 · Quasars are a subclass of active galactic nuclei (AGNs), extremely luminous galactic cores where gas and dust falling into a supermassive black hole emit electromagnetic radiation across the entire electromagnetic spectrum.

These different types of light reveal different aspects of the matter swirling around the black hole, which spans temperatures from close to absolute zero up to millions of degrees.

2019年5月14日 · Similar to black holes, no single quasar is alike and can be categorized into numerous subtypes that include: radio-loud quasars, radio-quiet quasars, “Broad Absorption-Line” (BAL) quasars, Type 2 quasars, red quasars, “Optically Violent Variable” (OVV) quasars, and “weak emission-line quasars.”

2011年9月7日 · At the most basic level, quasars are often split into two categories based on their spectra: Type 1 quasars, which have broad emission lines (and a smattering of narrow ones), and Type 2 quasars, which have only narrow lines.