skip to primary navigationskip to content
 

Greedy black holes in the early Universe generate galactic storms

last modified Sep 27, 2019 02:05 PM

Scientists at the Kavli Institute, in collaboration with researchers at various institutes in Italy, have discovered that in the early Universe, at the time when the first stars and first galaxies formed, the first massive black holes became extremely greedy, by gobbling enormous amount of matter, and generated extremely powerful winds. These winds reached velocities in excess of 1,000 kilometres per second, and certainly affected the galaxies in which the black holes were hosted.

However, despite being so mighty, such winds were probably not capable of suppressing the birth of new stars in their host galaxies. These galaxies may therefore have survived these catastrophic events by continuing their evolution and forming new generations of stars.

The result was obtained by investigating the signal emitted by ionized carbon of 48 quasars, which are supermassive accreting black holes, observed at an epoch when the Universe was younger than one billion years (that is less than 7% of the Universe current age).

The data was collected by the Atacama Large Millimetre Array (ALMA) in Chile.

The project was led by Manuela Bischetti, former student at the Kavli Institute, and the results were published in this week’s issue of the journal Astronomy and Astrophysics: https://www.aanda.org/articles/aa/abs/2019/10/aa33557-18/aa33557-18.html

quasars_winds1.png

 

quasars_winds2.png

 

KICC Annual Report 2019

Read more

RSS Feed Latest news

Galaxies in the Infant Universe Were Surprisingly Mature

Oct 27, 2020

Massive galaxies were already much more mature in the early universe than previously expected. This was shown by an international team of astronomers—including researchers from the Kavli Institute for Cosmology (KICC) and the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) — who studied 118 distant galaxies with the Atacama Large Millimeter/submillimeter Array (ALMA).

The Nobel Prize in Physics 2020

Oct 06, 2020

The Nobel Prize in Physics 2020 has been awarded to Roger Penrose, Reinhard Genzel, and Andrea Ghez, for their discoveries about one of the most exotic phenomena in the universe: the black hole.

View all news