File:Strong black hole winds reshape a galaxy ESA25463575.tiff

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Captions

Captions

This artist impression shows ultra-fast winds blasting out from the centre of galaxy Markarian 817. These winds, moving at many millions of kilometres per hour, clear out interstellar gas from a vast region of space.

Summary

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Description
English: This artist impression shows ultra-fast winds blasting out from the centre of galaxy Markarian 817. These winds, moving at many millions of kilometres per hour, clear out interstellar gas from a vast region of space. Without this gas, the galaxy can’t form new stars and the black hole in the galactic centre has little left to eat.
The inset shows what is happening at galaxy’s heart. A supermassive black hole draws in gas from its surroundings, which forms a hot, brightly lit ‘accretion disc’ (orange). The cause of the winds (white) is magnetic fields within the disc, which fling particles out in all directions at incredibly high speeds. These winds effectively block out X-rays (blue) which are sent out by the extremely hot plasma surrounding the black hole, called the corona.
Researchers caught Markarian 817 blasting out ultra-fast winds using ESA’s X-ray telescope XMM-Newton. Lasting for around a year, the winds will have significantly affected star formation in the galaxy. The fact that the black hole at the centre of the galaxy was showing rather average activity levels before producing the winds suggests that ultra-fast black hole winds are much more common than previously thought. In other words, black holes and their host galaxies strongly affect each other’s evolution.
Read the full story here
Separate images: large view of the galaxy and close-up of the centre
[Image description: Side view of a galaxy with spiral arms of bright blue stars separated by dark bands of interstellar dust. The galaxy’s active centre is blasting out a strong wind of gas in all directions, shown as yellowish-white streaks. An inset zooms in on the centre, showing that the wind is coming from a swirling disc of gas, lit up in orange and yellow, which encircles a supermassive black hole.]
Date 1 February 2024 (upload date)
Source Strong black hole winds reshape a galaxy
Author European Space Agency
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Activity
InfoField
Space Science
Keywords
InfoField
Galaxies Galaxy Active galaxies Galaxy dynamics Galaxies; active black hole Black holes X-rays X-ray astronomy
Mission
InfoField
XMM-Newton

Licensing

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This media was created by the European Space Agency (ESA).
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Attribution: ESA (acknowledgement: work performed by ATG under contract to ESA), CC BY-SA IGO 3.0
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This file, which was originally posted to Strong black hole winds reshape a galaxy, was reviewed on 6 February 2024 by reviewer Юрий Д.К., who confirmed that it was available there under the stated license on that date.

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