Homehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/"Like a lighthouse": a supermassive black hole in the center of the Milky Way exploded as human ancestors walked the Earth, scientists discover
"Like a lighthouse": a supermassive black hole in the center of the Milky Way exploded as human ancestors walked the Earth, scientists discover
A supermassive black hole in the center of the Milky Way triggered a "cataclysmic" explosion that occurred quite recently when our ancient ancestors walked the Earth, scientists say.
While astronomers suspected that such an event had taken place for years, new studies date an explosion just 3.5 million years ago – 63 million years after an asteroid destroyed dinosaurs.
Two nuclear cone-shaped outbreaks of the Milky Way in opposite directions for at least 200,000 light-years, erupting into deep space and affecting a gas trail, partially bypassing a galaxy known as the Magellanic Flow.
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Scientists claim that such a powerful explosion could only be triggered by nuclear activity related to Sagittarius A, a black hole in the center of our galaxy of 4.2
"These results are dramatic change our understanding of the Milky Way, "said study co-author Dr. Magda Guglielmo of the University of Sydney. "We always thought of our galaxy as an inactive galaxy with a not so bright center.
"Instead, these new results open up the possibility of a complete rethinking of its evolution and nature. The outbreak … was so powerful that it had consequences for the environment of our galaxy. We are witnessing the awakening of a sleeping beauty . "
Sagittarius A tends to be a relatively stable" sleeping dragon, "researchers say.
But research shows that the black hole has woken up dramatically as our ancient ancestors, ape-like Australopithecuses, were already on their feet in Africa, releasing a spike known as the Seifert outbreak.
The head of the study, Professor Joss Bland-Hawthorne, of the University of Sydney, said: "The splash should have been like
" Imagine the darkness and then someone switches on the lighthouse for a short time. "
His team at the Australian Center for Excellence in Celestial Astrophysics in 3 Dimensions (ASTRO 3D) described it as a "titanic expanding energy beam."
Professor Lisa Keuli, director of ASTRO 3D, said: "This is a dramatic event. that happened millions of years ago in the history of the Milky Way.  Only the best news in your inbox
"A massive burst of energy and radiation escaped directly from the galactic center and into surrounding material.
" This shows that the center of the Milky Way is a much more dynamic place than we previously thought. We are fortunate that we do not live there. "
In 1996, astronomers became aware of a strange glow emitted from the Magellanic flux. Scientists began to hunt the case, and Sagittarius A became the prime suspect.
The team first described the evidence of this explosion in 2013 when they identified a black hole as the cause.
Their latest work, published in the Astrophysical Journal builds on and reinforces their previous conclusions.
Based on a recent analysis of data collected by the Hubble Space Telescope, researchers estimate a massive explosion occurred 3.5 million years ago and lasted about 300,000 years.
The question of how black holes are evolved, influenced and interacted with galaxies "is an extraordinary problem in astrophysics," the researchers added.
Black holes are places where matter is compressed by gravity to the point where the normal laws of physics collapse, bending and distorting space and time.
By definition, they cannot be viewed in the conventional sense, making them difficult to study. Their presence stems from radiation emitting gas and debris around them
Unlike its "sleepy" person, last month, researchers found Sagittarius A "getting hungrier" by eating a lot more interstellar gas and dust than it did when -something seen before.