Astronomer Michael Koss was searching the skies a few years ago, hoping to find what we know as black holes. The official name for this is active galactic nuclei (AGN). These black holes are lurking in the cores of the galaxies and galaxies swallow matter hungrily. The gas they eat up heats up and the explosion is visible from billions of light years away. The mysteries of space.
Koss was looking for twin black holes when he found something out of the ordinary, even for space. What he found looked like a spot of light, he named SDSS1133, located in a small (dwarf) galaxy called Markarian 177. The dwarf galaxy is located 90 million light-years away from our planet, in the bowl of the “Big Dipper”.
What Koss noticed looked like a regular black hole except it was not in the middle of its galaxy. It was off-centered by approximately 2,600 light-years away from its galaxy. Koss said that it might not be a black hole, but a very unusual exploding star.
Koss wasn’t really pleased with his theory that the black hole wasn’t really a black hole and started to further investigate. He went back to earlier NASA observations, made by the Swift satellite and discovered that the bright spot was there even in the 1950s. Koss said that stars don’t usually take 50 years to explode, which means that the star is a black hole after all, one that has been cast out from its own galaxy.
Astronomers say that it’s quite difficult to boot a black hole, because of its weight first of all. A black hole can weigh millions of times more than a star. So how did the black hole got thrown away from the center of its galaxy? Astronomers say that there could have been a second black hole which propelled the first one out.
Laura Blecha, one of the astronomers involved in the study said:
“We suspect we’re seeing the aftermath of a merger of two small galaxies and their central black holes.”
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