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  #21  
Old 15-10-2009, 08:32 AM
DJDD
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Originally Posted by xelasnave View Post
I was thinking..not drinking...and how about this...
Maybe dark matter is just little black holes..why..

hold on, alex, have you had an epiphany? when did you start believing in Black Holes? or have I missed something in this or another thread?

now my head will really explode...
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  #22  
Old 15-10-2009, 08:50 AM
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mithrandir (Andrew)
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Originally Posted by xelasnave View Post
I was thinking..not drinking...and how about this...
Maybe dark matter is just little black holes..why.. because neither radiate er radiation..both can only be "seen" by drawing a gravitational conclusion (unless we agree that B H have Hawking radiation ...but a little one probably would not...)
Rereading Hawking, the temperature of a black hole is inversely related to its mass, so small black holes produce more HR and lose mass faster.

Eventually the mass of the BH would reduce to a point where "... the most reasonable guess is that it would disappear completely in a tremendous final burst of emission, equivalent to the explosion of millions of H-bombs."

If DM was actually small BH, would we expect to observe a few of these explosions, or is the universe not old enough yet?

Andrew
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  #23  
Old 15-10-2009, 09:32 AM
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Originally Posted by DJDD View Post
hold on, alex, have you had an epiphany? when did you start believing in Black Holes? or have I missed something in this or another thread?

now my head will really explode...
I dont believe in ghosts but I will use them to scare the kids

I have different views on black holes no doubt and yes I dont really believe they can not / can ....? exist for althought the math is available to say we can have them there is no math to show that they can not..yet.... and given DrA found them difficult to accept I would rather trust his instincts rather than another..scarred out of his witts working in a fox hole with shells exploding everywhere... would your mind not be driven to think of black holes... now my facts may be off but it seems our black hole inventer jumped on DrA's bangwagon and DrA being a mild decent man probably did not have the heart to crush the inventers ideas.

They dont add up ... the math results in many aspects that defy a reasonable "inteligently designed universe"... Dr A obsereved God does not play dice and if he was pushed he would have said God would not have created black holes to confuse humans.

To me their existence comes from an extrapolation that was allowed to run its course (same with big bang ..the Universe is expanding so it must have expanded from a single point) however I am dubious that nature would allow such... and although we have evidence that can support the concept via rays and apparent gravitational influence those seeking BH,s perhaps have not considered other things that could minic the black holes we have convinced ourselves are indeed a fact.

Certainly if black holes exist they will offer proof that the Universe works via push a fact obvious to all that considers the implications of the impossibiloity of escape from a black hole... It is a small point but lets think about how a message of gravity can escape from a black hole... If light can not how could a graviton or whatever other particle we invent for the job do so... the premise of a black hole is infinite gravity..I know there is no such thing as infinite in this context and I use the term to set an upper limit that we dont have to consider...

I also find it difficult to conceive that the massive jets we observe can be generated by a single object however a binary system would do such easily I feel... and in the push universe a fast rotating massive b inary system will produce the jets, the rays and an observational strong gravitational field... so I guess I like to see a galaxy like a CD or DVD solid with a physical hole in the center created by the binary such that one side of the universe can be pushed thru ...like water going down the plug hole if you like... now if this is so jets will probably appear to go in one direction ..in one side and out the other...
Still if we are to work with a single object notwithstanding the frame dragging thing I find it very difficult to see how the jets could be created...

Although I go on about the push universe I also have to consider the current science which still has a huge following... One could not ignore the Catholic Church if you were starting a new religion and not to respect their beliefs would not be a decent approach. And who knows they may have some useful info on how to run a religious organisation.

Dark matter has to be nailed down... I think it will prove to be a myth so to help I will suggest anything that it can not be.. so looking at them one needs to look around the Universe for other objects that do not radiate energy and give their prescence away by gravitational observation... well black holes spring to mind... and DM makes up a lot of the Universe unseen so it could be reasoned it is also very dense...

Who knows but until all are satisfied dark matter is not the answer attraction will continue to fool humans that it is a force worthy of inclusion in their science...

AND mostly any thoughts on dark matter is as good as any other until the whole matter stands on a sound basis with math proof and some sample jars full of dark matter in the lab.

alex
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  #24  
Old 15-10-2009, 09:51 AM
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Quote:
Originally Posted by mithrandir View Post
Rereading Hawking, the temperature of a black hole is inversely related to its mass, so small black holes produce more HR and lose mass faster.

Eventually the mass of the BH would reduce to a point where "... the most reasonable guess is that it would disappear completely in a tremendous final burst of emission, equivalent to the explosion of millions of H-bombs."

If DM was actually small BH, would we expect to observe a few of these explosions, or is the universe not old enough yet?

Andrew
Andrew we cant use a reasonable guess in science I find that unacceptable.

AS you say if such were so we would observe explosions not from dark matter necessarily but from a black hole that has reached that point in its life where it does what is guessed..er predicted.... but as you say maybe the Universe in not old enough...maybe so but 13.5 billion years is a decent time frame to think something would have happened by now..think of the life cycle of any star ..it is born and it dies.. why would a black hole..which is in fact a star in loose terms...
ANYWAYS we have room to speculate as to Dark matter... we have room to investigate the specualtions ... dark matter could be anything but as I have said before it will prove to be nothing which as we have already concluded will indeed be full of something.

alex
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  #25  
Old 16-10-2009, 07:20 PM
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KenGee (Kenith Gee)
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Don't worry about dark matter not fitting the standard model well, Gravity itself doesn't. That's one of the fun bits of physic's these day (for sometime realy) If they don't find the higgs it makes SR/GR look even better.

Edit BTW the SM's leading cadidate for dark mater is accordign to the link provided is the neutralino .

Last edited by KenGee; 16-10-2009 at 07:35 PM. Reason: extra info
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