Sunday , May 16 2021

A catastrophic galactic collision could send the solar system flying into space



A new study by astrophysicists from Durham University in the United Kingdom predicts that the Magnificent Cloud (LMC) could hit the Milky Way for two billion years.

The conflict could have happened much earlier than the anticipated impact between the Milky Way and the other neighboring galaxy, Andromeda, which scientists say will hit our galaxy for eight billion years.

The disastrous arrangement with the Great Magelan Cloud could awaken the dormant black hole of our galaxy, which would begin to devour the surrounding gas and increase to ten times.

As it feeds, the now active black hole would throw high energy radiation and while it is unlikely that cosmic fireworks will affect Earth's life, scientists say it is unlikely that the first collision could send our solar system to the universe. .

The findings are being published today (Friday, January 4) in the journal Monthly Reports by the Royal Astronomical Society.

Galaxies like our Milky Way are surrounded by a group of smaller satellite galaxies that circulate around them in a similar way as bees move around the hive.

Typically, these satellite galaxies have a quiet life and spin around their hosts for billions of years. However, from time to time those tones to the center, collide and devour galaxy hosts.

The Great Magelan cloud is the brightest satellite galaxy of the Milky Way and has entered our neighborhood about 1.5 billion years ago. There are about 163,000 light years from the Milky Way.

Until recently, astronomers thought they would orbits the Milky Way for billions of years or, since they are moving so fast, to escape the gravity of our galaxy.

However, recent measurements show that the Great Magelan cloud has almost twice as much dark matter as previously thought. Researchers say that since it has a larger mass than expected, the Great Magelan cloud quickly loses its energy and is condemned to crash with our galaxy.

The research team, led by scientists from the Institute of Computational Cosmology at Durham University, who co-operated with the University of Helsinki in Finland, used simulation of a supercomputer for the formation of the EAGLE Galaxy for collision prediction.

Dr Marius Cautun, MD, Postdoctoral Associate at the Institute of Computational Cosmology at Durham University, said: "While two billion years are exceptionally long compared to humanity, this is a very short time in cosmic timeframes.

"The destruction of the Great Magelan's cloud, as it devours the Milky Way, will destroy our galaxy, wake the black hole that lives in its center and turn our galaxy into an" active galactic core "or quasar.

"This phenomenon will create powerful jets of high-energy radiation coming from just black holes, although it will not affect our solar system, there is little chance we can not escape the collision of two galaxies that could break us from the Milky Way and the interstellar space . "

The conflict between the Great Magellanic Cloud and the Milky Way could be spectacular, the researchers say.

Co-author Professor Carlos Frenk, director of the Institute of Computational Cosmology at Durham University, said: "As our universe is constantly evolving, often through violent events such as the upcoming collision with the Great Magelan Cloud.

"If no disaster occurs, such as a major solar system, our descendants, if any, are waiting for treatment: a spectacular view of the cosmic fireworks as the newly-opened super-massive black hole in the center of our galaxy reacts by emitting jets with an extremely light energy radius."

According to researchers, joining the two galaxies could be long-delayed in cosmic terms.

Dr. Alison Deason, of the Institute of Computational Cosmology at Durham University, said: "We think that until now, our galaxy had only a few connections with galaxies of very low masses.

"This is a very thin piece compared to nearby galaxies of the same size as the Milky Way. For example, our closest neighbor, the Andromeda galaxy, devoured galaxies that had 30 times more weight than those consumed by the Milky Way.

"Because of this, the collision with the Great Magellanic Cloud has long been needed and our galaxy needs to be typical."

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The research was funded by the Scientific and Technological Resources Council, the European Research Council, the Royal Society and the Academy in Finland.

Waiver: AAAS and EurekAlert! are not responsible for the accuracy of the information published in EurekAlert! by the contributing institutions or the use of any information through the EurekAlert system.


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