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A study shows the unexpected effect of black holes beyond their own galaxies


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Credit: Gabriel Pérez Díaz, SMM (IAC) and Dylan Nelson (Illustris-TNG).
At the heart of almost every sufficiently massive galaxy there is a black hole whose gravitational field, although very intense, affects only a small region around the centre of the galaxy. Even though these objects are thousands of millions of times smaller than their host galaxies our current view is that the Universe can be understood only if the evolution of galaxies is regulated by the activity of these black holes, because without them the observed properties of the galaxies cannot be explained.
Theoretical predictions suggest that as these black holes grow they generate sufficient energy to heat up and drive out the gas within galaxies to great distances. Observing and describing the mechanism by which this energy interacts with galaxies and modifies their evolution is therefore a basic question in present day Astrophysics. ....

Ignacio Mart , Annalisa Pillepich , Max Planck Institute For Astrophysics , Max Planck Institute For Astronomy , Sloan Digital Sky , Instituto De Astrof , Sloan Digital Sky Survey , Max Planck Institute , Space Planetary Science , இக்ந்யாஸியொ மார்ட் , ஸ்லோன் டிஜிட்டல் வானம் , ஸ்லோன் டிஜிட்டல் வானம் கணக்கெடுப்பு , இடம் கிரகங்கள் அறிவியல் ,