Zero net gravitational waves by 2050?

GRAVITATIONAL WAVES COULD COLLIDE SUCKING EARTH INTO A BLACK HOLE

The physicists believe such a freak gravitational wave could be powerful enough to tangle space-time. That in turn could create a black hole. The resulting black hole could swallow up 85 percent of the wave’s energy, while some of the lingering ripples would orbit the hole forever.

I’m not sure that anything is forever on a Universe scale.

Frans Pretorius, study co-author and a professor of physics at Princeton University, told New Scientist: “These particles have a lot of energy and produce curvature in space-time, and when the waves collide, that curvature wraps in on itself. Space-time is sort of sucking itself into a black hole.”

But despite that and the headline we may not have to worry about it in our lifetimes…

Dr. David Garfinkle, a professor in the department of physics at Oakland University in Michigan, told New Scientist nothing in the known universe exists that could cause plane-fronted waves to form a black hole.

…or our grandchildren’s lifetimes.

Earlier this year, astronomers found the fastest-growing black hole ever. It ate up a mass equaling that of the sun’s every two days. The black hole grew at 1 percent every million years, 12 billion years ago.

“We don’t know how this one grew so large, so quickly in the early days of the Universe,” Christian Wolf, an astronomer at the Australian National University (ANU), said in a statement. “The hunt is on to find even faster growing black holes.”

Wolf continued: “This black hole is growing so rapidly that it’s shining thousands of times more brightly than an entire galaxy, due to all of the gases it sucks in daily that cause lots of friction and heat.”

Now I’m confused. I thought that black holes sucked stuff so hard that no light escaped. Perhaps it glows bright before entering the black hole.

 

 

8 Comments

  1. Gezza

     /  August 31, 2018

    Now I’m confused. I thought that black holes sucked stuff so hard that no light escaped. Perhaps it glows bright before entering the black hole.

    Yes, that is what happens. Gas and other matter in the swirling accretion disk gets accelerated to such high speeds it is heated to such incredibly high temperatures by friction that it gives off very bright x-ray and visible light before passing the event horizon – after which no light can escape.

  2. Gezza

     /  August 31, 2018

    There was an item on 1ewes about an air leak being discovered yesterday in the International Space Station, most likely caused by a micrometeor, and having to be plugged by an astronaut with his finger, and then with tape.

    https://www.mirror.co.uk/science/international-space-station-leak-plugged-13167968

  3. NOEL

     /  August 31, 2018

    “Since nothing can escape from the gravitational force of a black hole, it was long thought that black holes are impossible to destroy. But we now know that black holes actually evaporate, slowly returning their energy to the Universe. The well-known physicist and author Stephen Hawking proved this in 1974 by using the laws of quantum mechanics to study the region close to a black hole horizon.

    The quantum theory describes the behavior of matter on the smallest scales. It predicts that tiny particles and light are continuously created and destroyed on sub-atomic scales. Some of the light thus created actually has a very small chance of escaping before it is destroyed. To an outsider, it is as though the event horizon glows. The energy carried away by the glow decreases the black hole’s mass until it is completely gone.”

    • Alan Wilkinson

       /  August 31, 2018

      So it starves to death unless it is fed.

  4. Zedd

     /  August 31, 2018

    cool pic; 2050 a space oddity ! 🙂

    ‘ground control to major Tom.. your circuits dead there’s something wrong… can you hear me major…. Im sitting in my tin can’

  5. PartisanZ

     /  August 31, 2018

    Oh no … Not this … Not this AND self-drive cars!!!

    Very cool pic … Spinning anti-clockwise …?