Energetic hot wind from low-luminosity active galactic nucleus

Dragon

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Post n°1

Energetic hot wind from low-luminosity active galactic nucleus

Post by Dragon Wed Jul 14, 2021 11:11 pm

Supermassive black holes in the universe swallow gas around them. The infalling gas is called black hole accretion flow.

There exists a supermassive black hole in almost every galaxy in the universe. The gas round the black hole will be accreted and form an accretion disk.

Strong radiation is emitted from the accretion disk, which is the origin of the radiation in the first image of black holes people have obtained in 2019.

Source

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Energetic hot wind from low-luminosity active galactic nucleus 334pu7m

Dragon

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Post n°2

Re: Energetic hot wind from low-luminosity active galactic nucleus

Post by Dragon Wed Jul 14, 2021 11:13 pm

Energetic hot wind from low-luminosity active galactic nucleus 5-blackhole

Credit: CC0 Public Domain

Depending on the gas temperature, black hole accretion flows are divided into two types, namely cold and hot ones.

Source

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Energetic hot wind from low-luminosity active galactic nucleus 334pu7m

Dragon

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Post n°3

Re: Energetic hot wind from low-luminosity active galactic nucleus

Post by Dragon Wed Jul 14, 2021 11:14 pm

Revolve Around a Black Hole Accretion Disk

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Energetic hot wind from low-luminosity active galactic nucleus 334pu7m

Dragon

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Post n°4

Re: Energetic hot wind from low-luminosity active galactic nucleus

Post by Dragon Wed Jul 14, 2021 11:15 pm

This animation of supercomputer data takes you to the inner zone of the accretion disk of a stellar-mass black hole. Gas heated to 20 million degrees F as it spirals toward the black hole glows in low-energy, or soft, X-rays.

Just before the gas plunges to the center, its orbital motion is approaching the speed of light.

X-rays up to hundreds of times more powerful ("harder") than those in the disk arise from the corona, a region of tenuous and much hotter gas around the disk.

Coronal temperatures reach billions of degrees.

The event horizon is the boundary where all trajectories, including those of light, must go inward.

Nothing, not even light, can pass outward across the event horizon and escape the black hole.

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Energetic hot wind from low-luminosity active galactic nucleus 334pu7m