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Small Galaxy With A Big, Dark Heart
Supermassive black holes, weighing millions to billions of times more than our Sun, are believed to reside at the hearts of most—if not all—galaxies in the Universe. Such beasts are characterized by their extremely heavy masses, insatiable hunger and messy table manners. These gravity monsters are mysterious and enigmatic. But the mystery became even more complicated when an oversized monster – weighing in at an incredible 17 billion Suns— caught inhabiting the heart of a strange little galaxy that is almost entirely a black hole!
“This is not quite what I was looking for. I expected to find very large black holes in really large galaxies,” Dr. Remco van den Bosch, astronomer at Max Planck Institute in Heidelberg, Germany, he said on November 26, 2012 Science now. Dr. Van den Bosch is the lead author of the paper describing this incredible gravitational monstrosity.
In 1915, by Albert Einstein Theory of General Relativity he predicted the presence of objects that possessed such strong gravitational fields that anything that unfortunately traveled too close to their gaping mouths would be swallowed up. However, the concept of real the existence of such gravitational monsters seemed so far-fetched that Einstein himself dismissed the idea — but scientists now know that such beasts can also I am doing there is.
Stellar mass black holes form when a very massive star violently collapses in the brilliant fireworks display of a supernova explosion, heralding the end of its life as a main sequence star (burning hydrogen). After a stellar mass hole is born, it can continue to gain mass by feeding on its environment. A supermassive hole is believed to be born when a stellar mass gains mass by gobbling up stars and gas — as well as merging with other black holes.
Astronomers have known for about a decade that perhaps every large galaxy in the Universe harbors a ravenous super-sized monster at its heart, locked there in a sinister secret. Oversized beasts can be at least as large as our entire solar system. The black hole of our galaxy is called Sagittarius A* (clear Sagittarius-a star), and is a placid old beast, except when it goes on an occasional feeding frenzy, and devours a hearty portion of gas or star that has unfortunately floated too close to its blackness. Sagittarius A* it weighs about 4 million times more than our Sun.
It is widely believed that supermassive black holes are subject to a standard correlation. That is, the heavier the galaxy’s central bulge of glittering stars, the more massive the vicious beast it inhabits. This essentially suggests that the weight of a galaxy’s stellar bulge is about a thousand times the weight of its central supermassive hole.
However, the small compact galaxy, NGC 1277, apparently marching to the beat of a different drum. The small galaxy, located about 250 million light-years from our planet, has a supermassive monster at its heart that makes up a whopping 14% of its total mass. Most other galaxies are believed to dutifully follow the ‘standard relativity’ rate and host black holes amounting to a comparatively paltry 0.1% of their total mass.
“This is a really strange galaxy. It’s almost all black hole. This could be the first object in a new class of galaxy-black hole systems,” said study team member Dr. Karl Gebbardt in a statement published on November 28, 2012. Space.com. Gebbardt is at the University of Texas at Austin.
The study, published in the Nov. 29, 2012, issue of the journal Naturefound that if this monster of a supermassive black hole were at the center of our solar system, it would swallow up all eight major planets and extend about 10 times farther than the dwarf planet Pluto and its icy counterpart, where they fall around the icy , his distant blackness Kuiper belt.
NGC 1277 is a relatively small member of a cluster of galaxies located in the constellation Perseus. It also represents a type of galaxy that is usually found to reside in clusters. This small galaxy with a big, dark heart is the so-called lenticular galaxy, meaning it’s a magical cross between a spiral and one elliptical galaxy. Spirals they are giant star-burning wheels, like our own Galaxy, and contain stellar populations of all ages. Elliptical they are shaped like giant footballs and host mostly old, red stars. Like one elliptical, NGC 1277 it no longer produces starbursts from fiery baby stars and hosts mostly only old stars. The youngest stars in the small galaxy are 8 billion years old – meaning they are twice the age of our middle-aged Sun, which is about 4.56 billion years. However, like a wonderful, pin-shaped spiral, NGC 1277 features a disk that sparkles with a multitude of incandescent stars.
“Maybe this thing is a relic from long ago,” Dr. continued to speculate. Van den Bosch on November 28, 2012. Science now. He went on to explain that the oversized holes were ignited by fires quasar— which are highly active galactic nuclei (AGN) that inhabited the early Universe — haunted space just after the Big Bang. Perhaps, he went on to suggest, NGC 1277 it represents a case of growth arrest and began its galactic childhood as a supermassive black hole but never managed to trap a string of fiery stars. In other words, like Peter Pan, NGC 1277 “never grew up”! His galaxy-brothers, clustering with him at Perseus cluster, they might selfishly have for themselves the stars which they would allow to a poor few NGC 1277 to reach starry galactic adulthood.
NGC 1277’s The supergiant could be much more massive than the currently recognized second runner-up, which is estimated (though not confirmed) to weigh around 6 to 37 billion solar masses. This beast resides in the dark heart of the galaxy NGC 4486Band holds about 11% of the central bulge of this galaxy.
Dr. Van den Bosch said on Nov 28, 2012 Space.com that his team discovered the monster black hole during a search it conducted to hunt for “the biggest black holes we could find.”
Astronomers carefully analyzed the light coming from 700 galaxies, using the Huge Light-Gathering Telescope, the Hobby-Eberly telescopeat the University of Texas at Austin McDonald Observatory. The team found that six of the galaxies in question had stars and other objects flying around inside them at breathtaking average speeds of over 218 miles per second! Galaxies, like NGC 1277, they were also tiny — just 9,784 light-years across, or less. The team suspected that black holes were responsible for these measurements and used archival data NGC 1277 from the respected Hubble Space Telescope. That’s how they found out NGC 1277’s big, dark heart.
Dr. Van den Bosch is curious about whether these supermassive black holes only formed in the early Universe, or whether some formed later in its history.” It could just be that this thing has been sitting around since the Big Bang and hasn’t done much since then. It may be a relic of what star formation and galaxy formation looked like at that time,” he commented on 28 November 2012. Space.com.
The team is trying to find out if NGC 1277 it is unique in its kind. However, as noted by astronomer Dr. Chung-Pei Ma of the University of California, Berkeley on November 28, 2012 Science Now: “When you just have a very strange system, then you can almost always make some theories. But if these galaxies form a class of their own, then that would be quite exciting.”
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