An accretion disk is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body. The central...

into an accretion disk. Most astronomical objects, such as galaxies, stars, and planets, are formed by accretion processes. The accretion model that...

Ae/Be star. The protoplanetary disk may not be considered an accretion disk; while the two are similar, an accretion disk is hotter and spins much faster;...

protoplanetary disk evolving into a planetary system over the next 10–100 million years. The protoplanetary disk is an accretion disk that feeds the central...

A Circumstellar disc (or circumstellar disk) is a torus, pancake or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids...

wind from the star provides material for an accretion disk around the X-ray source. Matter in the inner disk is heated to millions of degrees, generating...

such as visible light. Matter falling toward a black hole can form an accretion disk of infalling plasma, heated by friction and emitting light. In extreme...

Black Hole Accretion Disks" (PDF). Archived (PDF) from the original on 2016-09-10. Frankel, N. (2017). Nucleosynthesis in Accretion Disks Around Black...

field captures the accretion stream from the donor star before it can develop into an accretion disk. The capture of the accretion stream is known as...

astronomy, a disk wind is a particle outflow observed around accretion disks, mainly near protoplanetary disks and active galactic nulei (AGN). The disk wind...

(similar to exomoons) opened a gap within the disk, indicating a late stage of the disk. The accretion rate was estimated to be 10−6.5 MJ/year. A study...

and making the disk circumstellar. A giant planet will mainly form via core accretion. In this scenario a core forms via the accretion of small solids...

radio source. In May 2022, astronomers released the first image of the accretion disk around the event horizon of Sagittarius A*, using the Event Horizon...

black hole can reach, while being luminous accretors (featuring an accretion disk), is typically on the order of about 50 billion M☉. However, a 2020...

hours to render, totaling 800 terabytes of data. Thorne described the accretion disk of the black hole as "anemic and at low temperature—about the temperature...

cases there is strong soft (i.e. low-energy) X-ray emission from an accretion disk close to the compact object, although there are exceptions which are...

an accretion disk. The outflow relieves the build-up of angular momentum as material spirals down onto the central star through the accretion disk. The...

forms an accretion disk around the black hole. This accretion disk may become so hot, due to friction, that it begins to emit X-rays. The disk also projects...

systems exhibit full accretion disks, while strongly magnetic systems (called polars or AM Herculis systems) exhibit only accretion streams which directly...

astronomical sources. They likely arise from dynamic interactions within accretion disks, whose active processes are commonly connected with compact central...

photons emitted by the accretion disk. A less exotic means would be to simply capture photons already escaping from the accretion disk, thereby reducing a...

theoretical effort. This problem is illustrative of the larger issue of accretion disk theory, which plays a role in much of astrophysics. Regardless of the...

forms in most cases an accretion disk around the white dwarf. Strong UV and X-ray emission is often detected from the accretion disc, powered by the loss...

Ks-W4>2} , an age of >20 Myr and spectroscopic evidence of accretion. In 2016 volunteers of the Disk Detective project discovered WISE J080822.18-644357.3...

from the accretion disk winds, NuSTAR and XMM-Newton observed heating and cooling cycles of the relativistic winds leaving the accretion disk. NuSTAR and...

formalism originally developed in the field of fluid mechanics. In accretion disks and stellar surfaces, the dense plasma or gas particles collide very...

rotating black hole emitting twin astrophysical jets and surrounded by an accretion disk. It is a type of stellar explosion that ejects material with an unusually...

stellar wind, which flows onto the hot compact star, usually via an accretion disk. Symbiotic binaries are of particular interest to astronomers as they...

continuum, i.e., the light from the accretion disk near the black hole. Put simply, if the brightness of the accretion disk varies, the emission lines, which...

binary star systems and accrete matter from either stellar winds or accretion disks. The accreted matter transfers angular momentum to (or from) the neutron...