Astronomers have found winds blasted out by the giant black holes at the center of galaxies that because of their strong, they can stunt the birth of new stars. They have can measured the strength of this winds focusing their telescopes in a black hole as big as billion Sun.
The observations were carried out by an international team of astronomers using the telescopes from the European Space Agency and from Nasa.They have also seen that this winds blow outwards in every direction. The team tried to show how black holes can impede the evolution of the galaxy and the appearance of new stars.
Fiona Harrison, a professor of the California Institute of Technology said that they knew that black holes can feed on matter and produce winds.
The astronomers used the telescopes simultaneously to recorder differents wavelengths of light from black holes tow billion light-years away. It shines with many types of light, so it is a quasar.
One of the telescopes had already detected winds blowing to the earth from this black hole. Astronomers detected it because the iron atoms that are caused by the winds, interfered in a characteristic way when they block X-rays. But when they added high-energy, the astronomers could notice a different way to act of the iron atoms. This means that the wind rushes out in an spherical blast.
Professor Harrison said that thanks to know the speed, shape and size of the winds they can now about the powerful they have. And this powerful is amazing: ten times tha mass of the Sun is blow out every year and a trillion times more energy than our star emits.
All those quantities of energy and the winds have some impacts in the galaxy. The same take place with all supermassive black holes, like Sagittarius A in the center of our Milky Way.
The study let us know that the quasar winds contribute to mass loss in the galaxy driving out the gas wich is fuel for the stars formation. And the study provides a new view of the possible evolution that the center black holes have with their host galaxies.
Personally I have found this new very interesting because I like very much the astronomy and all kind of topics that have relation with galaxies. I like have knledges about differents things like biology, technology, medicine..., and maybe astronomy is one that attracs me more.
I use to watch documentaries on TV and every time astronomers find new galaxies, stars, planets... But I think that what most interested me about astronomy is not what scientists discover, what they don't know yet.
Always, since the first men on the erth, they have tried to find the answers to the universe and there are a lot of different theories. But the true is that nowadays nobody knows and nobody understand the univers and the things that can be in there.
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