Calling all black hole theorists (i need your help!)

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i had no idea where to put this, i was hoping someone could help me out seeing as most of you are interested the stuff i am interested in.
my friend said i should put it into a scientific forum, but im kinda scared of the feedback ill get.


http://www.sky.com/skynews/article/0,,31500-13196489,00.html

it says they have a new theory that a big bang could happen anywhere on earth, even your own kitchen.

ext time you hear a big bang in your kitchen it may not be the chip pan exploding - it might be a new universe being created.  

"Scientists say they cannot dismiss the possibility that a new universe could explode into life in your kitchen.

Nor can they rule out a Big Bang in your bedroom.  

But don't be too concerned that you could become the centre of a new universe.  

Scientists say the chances are so remote the figure is one divided by one followed by 100 million trillion trillion trillion trillion noughts." 

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well you see, i thought up nearly the same theory that a black hole could be projected by any exploding object, but it would depend on the size of the explosion to how big the black hole would be. IE. with a firework, the black hole would be like millimetres wide and would only last a couple seconds because of the small velocity of the explosion/implosion.

am i right in thinking this? i need some friendly feedback, i would be so glad if any of you knew much on the topic.

Err ... the gravity & inward acceleration needed to produce a black hole is quite great.

The smallest star, of my knowledge, that has even had a supernova is Eta Carinae (and by cooincidence is the only star in my knowledge to have survived one). I've never looked for stars dissapearing & their dimensions, but I can assure you that no little thing in your kitchen is going to go into supernova, & implode to form a black hole.

Most of these theories that are currently proliferating are just the result of odities in mathematical developments that have never been established in practise.

These theoretical physicists seem to work on the principal that, as anything real can be described mathematically, then anything which is mathematically consistent must be real!

This is logically absurd.

[Besides, things like Special Relativity can be/ have been disproved, both in principle and in practice, but, with so many careers and grants tied to such research, the scientific establishment for the most part is in willful denial! In any case, it's never a good idea to believe what one reads in the newspapers...]

If I'm not mistaken, the only thing that can form into a black hole is a dying star of such great mass, that after the fusion reaction has died out, and there's no more energy keeping the star inflated, that it simply collapses upon itself.

But I don't even think science is all to sure on this one. I read one place the dead star collapses into an object a with a diameter of a few kilometers. Another, newer source I read, states that the original star collapses into an object the size of a pin head, and as it draws in more matter, it continues to get smaller and smaller, denser and denser, and more and more powerful.

A perpetual doomsday senario in a sense, the black hole gets so dense and so powerful that one day, the biggest ones will start to suck up all the matter in the universe, including all the other, smaller black holes.

The gravity is so great that it swallows space time itself ... It wouldn't just devour matter, it would devour existance in a sense. Very much a doomsday scenario.

Things like that are hard to comprehend, let alone understand, especially when they push the laws of nature and physics.

Fast fact: I read once that based on the density needed for a star to become a blck hole, if earth could be compressed into a sphere about 2cm in diameter, it to would become a black hole. Albeit, a very minuscule one.

First observation is spot on.

It depends on the original mass; most single stars just become a brown dwarf, a cosmic clinker, larger stars may become neutron stars (very dense, but stable. It takes something considerably bigger (or several of them) to become a black hole, or there must be interaction with other nearby matter (a relatively dense nebula, for example).

For the last, happily, the inverse square law applies; you have to get pretty close (in cosmic terms) even to a black hole, before you fall in, so no doomseday by this method!

I'm pretty sure black holes spew out energy. Maybe not as much a doomsday scenario. Especially as, also, things outside their event horizons don't necessarily get sucked in.

They would have to emit some kind of energy. Basic laws of physics state that if an atom has molculer motion, it will give off energy. Maybe the gravity in a black hole is so powerful that the energy given off becomes so red-shifted that we have no way of acurately measuring it here on earth, or, the black hole simply sucks it's own energy back in along with everything else that crosses the line.

We know that stuff going into a black hole is giving off great quanities of energy. Take galaxy m87, which is thought to contain a massive black hole at it's center, and it's famous X-RAY jet which extends millions of miles from it's center. It's safe to say that once those x-ray producing gas particles cross over the point of no return, there still going to give off X-RAY's as they fly towards the singularity.

Black holes do emit energy in the form of Hawking radiation. See http://math.ucr.edu/home/baez/physics/Relativity/BlackHoles/hawking.html.

Black holes do not have to come from stars, nor do they have to be of any specific size. A black hole is simply concentrated mass. A collapsing sun is a good candidate for this because there are already forces present that are forcing mass together. However, in any scenario where mass is concentrated in such a way that photons within a certain radius of that mass experience a greater force pulling them towards the center than exists in their own energy, this is a black hole. The radius of convergence is the schwarzschild radius (or the event horizon). This can happen at the atomic scale and these types are events are suspected by many to occur frequently.
It is not a violation of the conservation of energy for a blackhole to not emit any energy, quite the opposite. The energy that is absorbed by the black hole is converted into mass (e=mc^2), feeding the black hole and allowing it to continue and possible grow. If a black hole doesn't not get enough energy/mass it will lose its energy to its own particle emissions (re: Hawking's radiation) and will not have enough energy to overcome its internal forces: the matter will expand and it will not longer exist as a black hole.
An explosion that would cause a black hole would have to be one of massive energy relative to its mass, though, as it would need to overcome strong/week forces at the atomic level, so a firecracker would not be sufficient for a macroscopic event of the type.
The simplistic concept of a blackhole, incidentally, is very basic: Mass emits gravity proportional to the distance between two bodies, light has energy and is pulled inward by an accelerating force proportional to its own energy as a mass-equivalent within its inertial reference frame (simply, gravity pulls light). If the gravity exceeds the energy of the photon (particle of light), it cannot overcome the gravitational field and it is sucked in. If no light can escape the area (different wavelengths of light have different amounts of energy), then no light can escape the gravitational field, that's all a black hole is.

I just had a big bang happen in my pants.

this is what happens when scientists go wild

Let's hope that the Big Bang that is cming is not the nuclear explosion from a nuclear reactor somewhere in the Middle East, because it has also been said that the the Middle East is where the third World War (WWIII) will begin.

Maybe we need a black hole to give us a true shake awake call of what is happening in the world. But who is the good and who is the bad might not turn out as many expect to find.

Star

Who ever said the big bang happened with a black hole? A black hole is the theoretical result of a giant star that basically colapses. It has all of its mass in an infinitesimal space. The gravity is supposed to be so great that nothing can escape it. Not even light, which gives it the name. The only item anyone thinks might become a black hole here is the SUN! Don't worry though, that is probably a LONG way off.

Frankly, the big bang was just the opposite. The big bang was supposedly caused by a big explosion that forced matter that was somehow somewhere out to the furthest regions of the area, and the inertia and heat caused items to combine. Smaller versions of the big bang happen ALL OVER! Heck, gases rise into the atmosphere. They get closer to the sun and, when they get high into the atmosphere, near a somewhat unstable form of oxygen(O or O2) called ozone(O3). They form a bond with the oxygen and the O3 becomes O2, etc....

Its actually believed that black holes occur often and everywhere where mater is present, though often and sub-atomic levels. One of the experiments planned for the new Hadron collider at CERN is to create such a small black hole, though it is widely believed that one has already occurred at the Fermilab accelerator.
The predominant theory, as I understand it, is that the big bang occurred with two (usually repulsive)membranes collided, causing a massive release of energy, which began to condense into matter, rapidly spreading out and forming the four dimensions of the universe (x,y,z, and time). It has already been proven that there is a direct connection between energy and mass and that the two can be converted back and forth (this is the famous e=mc^2 equation and the basis for nuclear reactions). The condensing of energy into matter is analogous to matter itself condensing as it loses thermal energy. The only part of this theory that has any significant doubters is the cause (that membrane collision).

Are we talking about quantum foam here? Because I guess if you got a dip big enough, it might be a black hole in our universe and a white hole in somebody else's...