The Milky Way galaxy is residence to all life as we all know it, however about 3.5 million years ago, one thing unusual and “dramatic” occurred to it — a large explosion in its center.
According to a brand new research, the galaxy was hit with an power flare, close to an infinite black gap. Ultimately, the affect of the flare was felt 200,000 light-years away, the researchers added. A light-year, which measures distance in house, equals 6 trillion miles.
“The flare must have been a bit like a lighthouse beam,” the research’s lead writer and University of Sydney professor Joss Bland-Hawthorn mentioned in an announcement. “Imagine darkness, and then someone switches on a lighthouse beacon for a brief period of time.”
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The flare brought on two “ionization cones” that ripped by way of the Milky Way, leaving an affect on the Magellanic Stream. The black gap is named Sagittarius A*, or Sgr A,* and has a mass four million occasions that of the Sun.
Given the age of the universe, lengthy assumed to be roughly 14 billion years, the explosion is taken into account a comparatively current occasion, professor Lisa Kewley added.
“A massive blast of energy and radiation came right out of the galactic center and into the surrounding material,” Kewley continued. “This shows that the center of the Milky Way is a much more dynamic place than we had previously thought. It is lucky we’re not residing there!”
One of the research’s co-authors, Magda Guglielmo from the University of Sydney, mentioned the findings “dramatically change our understanding of the Milky Way,” main researchers to consider that the Milky Way is an lively galaxy, not an inactive one.
“We always thought about our Galaxy as an inactive galaxy, with a not so bright center,” Guglielmo added. “These new results instead open the possibility of a complete reinterpretation of its evolution and nature. The flare event that occurred three million years ago was so powerful that it had consequences on the surrounding of our Galaxy. We are the witness to the awakening of the sleeping beauty.”
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The analysis, which has been accepted however not but printed in The Astrophysical Journal, will be learn right here.
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