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> Black Holes And Accelerated Expansion Of Universe
PVastro
Posted: Jan 25 2012, 12:55 AM


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Hello,
Let me first start off by saying that I have no formal Education or background in Physics or Astronomy save for one course during college. This is simply posing an idea I had while reading an article on the acceleration of the expanding universe and how it could have a correlation with "Dark Energy" or "Dark Matter", and again I am only posing this question to see if it is at least reasonable or absolutely ludicrous. While there is debate on what exactly dark matter/energy is, those that stand by the belief of its existence say that it constitutes a large portion of all the matter in the Universe (I believe the average number agreed upon is roughly 80-90% if not more). Although we cannot see it many scientist are claiming that a black hole has some correlation to this phenomenon. I am aware that a black hole does not "suck" but is merely a point of infinite gravitational density and mass, of which not even light can escape.I suppose my main question is if all the matter that enters a singularity is expelled in pure protons or other particles or if some is converted into a form of this dark energy or matter. If some of the matter is converted and it is "emitted" (if that would even be the term for it) then could this be what causes the acceleration? Because while the initial velocity of the Big Bang is unimaginably fast it would stand to reason that it would slow down. However if dark matter/energy is what arguably pushes space and time then as more black holes occur more dark energy would be "emitted" pushing against the dark matter already there then would that add to an increase in the speed of the expanding universe. I am not trying to say that a black hole is some kind of magical portal that automatically turns matter into dark energy, but again I am curious to see if this would be a reasonable guess as to why this occurs. Please give me your thoughts and if I am completely wrong do not worry about offending me I am here for more expert opinions so please tell me if this is ridiculous.

Thank You
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Quantum Chaos
Posted: Feb 29 2012, 03:07 AM


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I would guess that at least some of the accelerating expansion is due to stars acting as thrusters in all directions as they are emitting energy. Though plenty of people much smarter then me are looking at all possibilities.
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oupfield
Posted: Apr 14 2012, 08:52 AM


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Since the Universe is accelerating, surely this means that previous calculations of the age of the Universe are inaccurate?

How can we approximate the age to 13.7bn years when we have little evidence on the rate of acceleration over the last Xbn years? Is the rate of acceleration even constant? Perhaps the Universe is far older than previously thought?

Is it possible that the Universe has been accelerating since t=0 "The Big Bang"? If so, it would be likely that "The Big Bang" was actually not so "big" after all. The exponential increases in the expansion velocity would suggest that the initial expansion would be incredibly slow - perhaps even almost zero.

Could we think of the expansion of the Universe as a gradual growth, perhaps where the rate of expansion increases proportionally to the "surface area" (or "surface area"^3/2) of the outer limits of the Universe?

Thanks for your thoughts...

An interested mathematician.

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Whitewolf4869
Posted: Apr 14 2012, 06:07 PM


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You have discribed my theory of equalization.
I think that in the beginning there was an empty universe with no matter no time only the force of 100% vacuum. Perhaps there is a bigger universe out side our own maybe one with only matter.
I think equalization caused some matter to be pulled in, not enough to equlize but just enough to reduce the vacuum enough to stop any more matter from being pulled in.
I beleave that is why elementary particles are seen popping in and out of existence.
There's not enough vacuum force left to pull them in and keep them here.
The expansion observed today is matter racing ever faster to fill the remaining void.

That is just my theory wink.gif


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Flyingbuttressman
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flyingbuttressman
Posted: Apr 28 2012, 12:38 AM


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You know, just today I was thinking about how awesome it would be if all RealityCheck's posts were deleted. That would be like Jesus forgiving physforum and washing it clean of all its sins.
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flyingbuttressman
Posted: Apr 28 2012, 01:50 AM


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QUOTE (DelightedYouCalled! @ Apr 27 2012, 08:50 PM)
Just like the Nazis burned the books en masse.

I can't believe that you've never heard of Godwin's Law.
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AlexG
Posted: Apr 28 2012, 03:34 AM


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QUOTE (flyingbuttressman @ Apr 27 2012, 07:38 PM)
You know, just today I was thinking about how awesome it would be if all RealityCheck's posts were deleted. That would be like Jesus forgiving physforum and washing it clean of all its sins.

It would be like taking out the garbage.


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Its the way nature is!
If you dont like it, go somewhere else....
To another universe, where the rules are simpler
Philosophically more pleasing, more psychologically easy
Prof Richard Fyenman (1979) .....

God does not roll dice with the Universe" - A. Einstein

"God not only plays dice with the Universe, He rolls them where you can't see" - N. Bohr


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Robittybob1
Posted: Apr 28 2012, 04:40 AM


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QUOTE (AlexG @ Apr 28 2012, 03:34 AM)
It would be like taking out the garbage.

60% warn level! Live carefully Alex!
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AlexG
Posted: Apr 28 2012, 05:15 AM


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QUOTE (Robittybob1 @ Apr 27 2012, 11:40 PM)
60% warn level! Live carefully Alex!

All my warnings have been for responding to the troll.


--------------------
Its the way nature is!
If you dont like it, go somewhere else....
To another universe, where the rules are simpler
Philosophically more pleasing, more psychologically easy
Prof Richard Fyenman (1979) .....

God does not roll dice with the Universe" - A. Einstein

"God not only plays dice with the Universe, He rolls them where you can't see" - N. Bohr


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Robittybob1
Posted: Apr 28 2012, 05:39 AM


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QUOTE (AlexG @ Apr 28 2012, 05:15 AM)
All my warnings have been for responding to the troll.

I have asked RPenner that RC be allowed back on the forum. The carry on at the moment is not doing the forum any good in my opinion. I know what it feels like to be totally banned and it is like being shot by a firing squad.
The use of short term banning maybe the right way to go. A week or two off will make one change their ways without the trauma of a total ban.

[Moderator: 8 warnings should be enough.]

This post has been edited by rpenner on Apr 28 2012, 07:19 AM
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synthsin75
Posted: Apr 28 2012, 12:25 PM


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QUOTE (Robittybob1 @ Apr 27 2012, 11:39 PM)
I have asked RPenner that RC be allowed back on the forum. The carry on at the moment is not doing the forum any good in my opinion. I know what it feels like to be totally banned and it is like being shot by a firing squad.
The use of short term banning maybe the right way to go. A week or two off will make one change their ways without the trauma of a total ban.

[Moderator: 8 warnings should be enough.]

To get to 100% warn level, RC would already have had more than a few weeks off, all told, to consider changing his ways. So your assumption that someone so delusional can learn from their mistakes is falsified right there.


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Any future development must involve changing something which people have never challenged up to the present,
and which will not be shown up by an axiomatic formulation. -P.A.M.Dirac
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Robittybob1
Posted: Apr 28 2012, 06:17 PM


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QUOTE (synthsin75 @ Apr 28 2012, 12:25 PM)
To get to 100% warn level, RC would already have had more than a few weeks off, all told, to consider changing his ways. So your assumption that someone so delusional can learn from their mistakes is falsified right there.

Well what about a system that increases the length of the ban the more bans one gets. First time 1 week, increasing by a week every time another ban occurs.

Some of these previous bans must have been quite a long time ago? I've been here 7 months and hadn't noticed RC being banned during that time.
In some way it would be good to have an incentive to improve by having good behaviour rewarded as well. E.g. the warning levels could drop 20% after a period of say a year of no warnings.
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flyingbuttressman
Posted: Apr 28 2012, 06:39 PM


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QUOTE (Robittybob1 @ Apr 28 2012, 02:17 PM)
Well what about a system that increases the length of the ban the more bans one gets. First time 1 week, increasing by a week every time another ban occurs.

I would go with an exponential scale:
1 week
3 weeks
9 weeks
27 weeks (~7 months)
Ban
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synthsin75
Posted: Apr 28 2012, 07:13 PM


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QUOTE (Robittybob1 @ Apr 28 2012, 12:17 PM)
Some of these previous bans must have been quite a long time ago? I've been here 7 months and hadn't noticed RC being banned during that time.

Our moderator was also on hiatus for about as long. Coincidence? I think not.


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Any future development must involve changing something which people have never challenged up to the present,
and which will not be shown up by an axiomatic formulation. -P.A.M.Dirac
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AlexG
Posted: Apr 28 2012, 08:03 PM


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rpenner, the troll should be IP banned.


--------------------
Its the way nature is!
If you dont like it, go somewhere else....
To another universe, where the rules are simpler
Philosophically more pleasing, more psychologically easy
Prof Richard Fyenman (1979) .....

God does not roll dice with the Universe" - A. Einstein

"God not only plays dice with the Universe, He rolls them where you can't see" - N. Bohr


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