Hell & High Water: "Houston Was Warned" --The Inside Story of the Impact of Hurricane Harvey
ALMA Observatory Detects Huge Hidden Reservoirs of Fuel That Feed Starburst Galaxies

"The Black Hole Paradox" --New Theory Says Soon After Big Bang, Black Holes Lit Up the Universe




Soon after the Big Bang, the universe went completely dark. The intense, seminal event that created the cosmos churned up so much hot, thick gas that light was completely trapped. Much later—perhaps as many as one billion years after the Big Bang—the universe expanded, became more transparent, and eventually filled up with galaxies, planets, stars, and other objects that give off visible light. That's the universe we know today.

How it emerged from the cosmic dark ages to a clearer, light-filled state remains a mystery. In a new study, researchers at the University of Iowa offer a theory of how that happened. They think black holes that dwell in the center of galaxies fling out matter so violently that the ejected material pierces its cloudy surroundings, allowing light to escape. The researchers arrived at their theory after observing a nearby galaxy from which ultraviolet light is escaping.

"The observations show the presence of very bright X-ray sources that are likely accreting black holes," says Philip Kaaret, professor in the UI Department of Physics and Astronomy and corresponding author on the study. "It's possible the black hole is creating winds that help the ionizing radiation from the stars escape. Thus, black holes may have helped make the universe transparent."

Kaaret and his team focused on a galaxy called Tol 1247-232, located some 600 million light years from Earth, one of only three nearby galaxies from which ultraviolet light has been found to escape. In May 2016, using an Earth-orbiting telescope called Chandra, the researchers saw a single X-ray source whose brightness waxed and waned and was located within a vigorous star-forming region of Tol 1247-232.

The team determined it was something other than a star. "Stars don't have changes in brightness," Kaaret says. "Our sun is a good example of that. "To change in brightness, you have to be a small object, and that really narrows it down to a black hole," he says.

But how would a black hole, whose intense gravitational pull sucks in everything around it, also eject matter?
The quick answer is no one knows for sure. Black holes, after all, are hard to study, in part because their immense gravitational pull allows no light to escape and because they're embedded deep within galaxies. Recently, however, astronomers have offered an explanation: The jets of escaping matter are tapping into the accelerated rotational energy of the black hole itself.

Imagine a figure skater twirling with outstretched arms. As the skater folds her arms closer to her body, she spins faster. Black holes operate much the same way: As gravity pulls matter inward toward a black hole, the black hole likewise spins faster. As the black hole's gravitational pull increases, the speed also creates energy.

"As matter falls into a black hole, it starts to spin and the rapid rotation pushes some fraction of the matter out," Kaaret says. "They're producing these strong winds that could be opening an escape route for ultraviolet light. That could be what happened with the early galaxies."

Kaaret plans to study Tol 1247-232 more closely and find other nearby galaxies that are leaking ultraviolet light, which would help corroborate his theory.

The Daily Galaxy via University of Iowa

Image Credit 


OK, let`s cut this long story (1 billion years) short. So in the beginning there was nothing, and nothing roamed the empty skies. Suddenly a point of infinite energy appeared from nothing, which is extremely improbable, like a God birth story that was infinite in Time. This point was much smaller than a pinhead, like half. From His birth exactly He started expanding until He was about the size of an SUV , which was so good He stood in this size for 1 billion years. Inside the SUV there were 1 trillion Galaxies , formed, but of what nobody knows, as there were no stars yet (no AC in the SUV, too hot inside). Even if there were no stars for 1 billion years, there were already about 1 trillion Black Holes in the center of every Galaxy, eating God knows what, since there were no stars yet to eat. For 1 billion years everything was running smooth, since the Eminem albums were much better those days. The whole thing blewup in the moment the driver installed a pair of UV lights under the car, for us to see how bad the road was. And than the driver said: Let there be Light ! And pressed the UV light switch. And suddenly the Universe started expanding again, and we are happy to have a new religion by preacher Kaaret.

@Gaugain: You are totally wrong about everything you said.
Black holes didn't lurk in the galaxy before stars were born; in fact, stars collectively formed a galaxy. We have telescopes and Microwave background that is a visual evidence of Big Bang. You need to understand matter and its properties along with elements (how they combine)
You don't need to be a science student to understand this but would require in-depth reading. Are you aware that the atoms in your body combine together to make elements that basically form your body parts?

Science has gotten us thus far. Without it we won't have life expectancy over 20yrs.
We owe our life to the science. You are alive only because of Science.

thanks for the information

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)