Black Hole Eruptions Kill Forming Stars With Giant Bubbles

Author: us-russia
Comments: 16777209
Category: News
Black Hole Eruptions Kill Forming Stars With Giant Bubbles
Published 12-06-2015, 18:49
Scientists found more evidence of how supermassive black holes kill star formations with giant gas "bubbles".

Astrophysicists observed three consequential matter eruptions from a supermassive black hole at the center of NGC 5813 — a group of galaxies 105 million light years away from Earth.

A galaxy group is similar to a galaxy cluster but usually consists of 50 or less galaxies, whereas a cluster can comprise thousands of them.

Astronomers used the Chandra X-ray Observatory — NASA's flagship X-ray telescope — to conduct the longest study of a galaxy group ever: the research took over a week.

The study suggested that the center of galaxy group NGC 5813 contains a supermassive black hole, whose spin, "coupled with gas spiraling toward the black hole, can produce a rotating, tightly wound vertical tower of magnetic field that flings a large fraction of the inflowing gas away from the vicinity of the black hole in an energetic, high-speed jet", NASA explained.

The jets generate shock waves pushing the gas, heated to millions of degrees, outside, and carve out so-called "cavities", or "bubbles". During the latest observation, the astrophysicists detected the third pair of those "cavities", which is the biggest quantity of pairs of "cavities" in a cluster or a group of galaxies ever found. The "bubbles" are drifting away from the black hole similarly to a bubble that rises to the water's surface. The observed "bubbles" can preserve a stable state for up to 50 million years.

Studying the characteristics of the three pairs, the researchers calculated that the formation of the last pair of "cavities" took less energy than the two older pairs. The scientists deduced an inference that the eruption of matter still occurs at the center of NGC 5813. This means the center of NGC 5813 influences both the group of galaxies itself and its neighbors, too.

The study also supports the theory that supermassive black holes really derail the star formation process in many galaxies: the "bubbles" collide with cold clouds of gas (material for star formation) and therefore prevent them from entering galaxies. That is why half of all big galaxies in the Universe are giant "graveyards" of stars.

The results of the study are available in The Astrophysical Journal.

 

sputniknews.com

Comments: 16777209
Category: News
Experts' Panel
Coming together to generate ideas...
In the end, the 2016 US presidential campaign did what democracies...
Coming together to generate ideas...
Top
popular in the journal
Russia, Trump, and a New Détente

Russia, Trump, and a New Détente

In his first press conference as president of the United States, Donald Trump said no fewer than seven times that it would be "positive,” "good,” even "great” if "we ...
RUSSIAN FEDERATION SITREP 9 MARCH...

RUSSIAN FEDERATION SITREP 9 MARCH...

RUSSOMANIA. The US is going though a period of insanity over Moscow’s influence to a degree not, I think, exceeded even during the McCarthy period. The immediate motives ...
German Experts View a Possible...

German Experts View a Possible...

A free trade area for the European with Russia and the other members of the Eurasian Economic Union (EAEU) would have economic advantages for all parties involved, ...
Chrystia Freeland’s Family Record...

Chrystia Freeland’s Family Record...

Chrystia Freeland (lead image), appointed last week to be the new Canadian Foreign Minister, claims that her maternal family were the Ukrainian victims of Russian ...
LEVEL TALK WITH JOHN HARRISON...

LEVEL TALK WITH JOHN HARRISON...

The big international news over the past week or so has been the stand-off between the US intelligence services and President Donald Trump. It seems that an attempt is ...