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Science Forum Index » Astronomy Forum » Black Holes in Early Universe
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| Chuck Taylor |
Posted: Sun Dec 21, 2003 12:50 am |
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"onegod" <spamone@msn.com> wrote in message
news:LvgDb.6320$Oh1.4921@twister.socal.rr.com...
Quote: Here's my theory (of course someone else could have had same theory though
mine is independent)...
There were always been black hole and matter....
That's quite a lot to start out with, free and clear without a cause.
Quote: Silly religious idea that universe must have BEGINNING is probably
wrong....
I didn't realize the big bang was religious.
Quote: And "the" big bang is just "a" big bang cause by collision of 2 black
holes.
How do two black holes colliding create the universe?
Clear Skies
Chuck Taylor
Do you observe the moon?
Try the Lunar Observing Group
http://groups.yahoo.com/group/lunar-observing/
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| Whisper |
Posted: Sun Dec 21, 2003 4:10 am |
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"Chuck Taylor" <chucktaylorNOMORESPAM@speakeasy.fishing> wrote in message
news:2MOdnR9jD55lqXiiXTWc-g@speakeasy.net...
Quote: "onegod" <spamone@msn.com> wrote in message
news:LvgDb.6320$Oh1.4921@twister.socal.rr.com...
Here's my theory (of course someone else could have had same theory
though
mine is independent)...
There were always been black hole and matter....
That's quite a lot to start out with, free and clear without a cause.
Silly religious idea that universe must have BEGINNING is probably
wrong....
I didn't realize the big bang was religious.
And "the" big bang is just "a" big bang cause by collision of 2 black
holes.
How do two black holes colliding create the universe?
Clear Skies
You have to smoke a lot of drugs before it becomes clear....... ; ) |
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| G=EMC^2 Glazier |
Posted: Sun Dec 21, 2003 7:06 am |
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Hi oc Well lets say mine was a very large pea,and your BH was the size
of a very small grape(ok) The sun spins slow,but when compressed to the
size of a blackhole(few miles in diameter) it would be spinning very
fast. It falls under the same physics as an ice skater when she wants to
get fast spin brings her arms in close to her body. I can't think of a
BH without giving it great spin. We can count the turns of a neutron
star,and they have a very fast spin,so that would be even more true of
BH Bert |
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| Bill Sheppard |
Posted: Sun Dec 21, 2003 7:41 am |
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Quote: Again, by what mechanism do you
propose that the accreting material
obtains a component of velocity directed
towards the poles???
OK let's try it again. Bert has no trouble understanding it. A spinning
body gravitates most strongly at the poles and least strongly at the
equator, due to the centrifugal effect (centrifugal _effect_ , not
"force" lest we get into a quibble over semantics).
The accreting material, as you say, is introduced
radially from the disc, moving inward on the equatorial plane. If the
gravitating body is rotating slowly (like a normal star), there is
negligible polar affinity, so the material simply falls out, largely
onto the equatorial regions.
But then you have neutron stars, which can have spin
rates of up to 700 rps, or 42,000 RPM (!). Then black holes, which can
go an order of magnitude higher still. And the accreting material, as it
moves in, encounters this repellant zone. Picture it as shaped like two
cymbals joined back to back. It's 'dimpled in' at the poles- the route
of least resistance *into* the BH, which resides at the exact center of
the system.
In order for the radially-moving infall to reach the
poles, it must cleave into two flows, riding 'up and over' the repellant
zone, finally plunging axially, head-on, into the poles.. as
mirror-imaging twin 'bathtub drain' vortices aligned on the polar axis.
The higher the BH's spin rate, the more acutely the infalls must align
to the polar axis.
Again, this bipolar accretion mechanism would be apparent
only in extreme close-up. oc |
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| John Zinni |
Posted: Sun Dec 21, 2003 11:04 am |
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"Bill Sheppard" <oldcoot@webtv.net> wrote in message
news:28906-3FE49515-63@storefull-3174.bay.webtv.net...
Quote: By what mechanism do you propose that >the accreting material obtains a
component of velocity directed towards
the poles???
Again, the analogy of a centrifugal pump. It naturally intakes by way of
the hub, not the rim of the spinning impeller wheel. This is an
_analogy_, remember, not meant to imply a BH *is* a pump.
In a centrifugal pump, material is introduced axially and is expelled from
the system radially. In YOUR BH material is introduced radially (the
accretion disk) and is somehow expelled from the system (normal space-time
into the BH) axially.
Your analogy is backwards.
I don't see how it applies.
Again, by what mechanism do you propose that the accreting material obtains
a component of velocity directed towards the poles???
Quote: Picture the BH in side-on view, in extreme close-up. The
infall from the accretion disc must follow the route of least resistance
_into_ (not 'onto') the BH. This would force the infall to divide into
two flows, riding 'up and over' the final hump, then plunging down the
twin 'bathtub drain' vortices head-on into the poles. The higher the
spin rate, the more acutely the infall must favor the poles.
Of course, if a non-rotating BH were to exist, it would
accrete in the same manner as any other object. But in the real
universe, all stars rotate, and when collapsed to a neutron star,
angular momentum imparts spin rates that can go to hundreds of revs per
second (as seen in millisecond pulsars). When collapsed to a BH,
spin-rates would go orders of magnitude higher yet.
The extreme spin-rates of BHs dictate their polar-accretion
dynamic.. AND the essential _gravitic bipolarity_ of all (spinning) BHs.
This bipolarity would be obvious only in extreme close-up; at distance
it drops below resolution and the BH becomes a monopolar point source.
oc
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| Bill Sheppard |
Posted: Sun Dec 21, 2003 7:47 pm |
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Quote: There is no "repellant zone" for the
infalling material to encounter. There is
nothing of substance that could impart its >angular momentum to the
infalling
material...
Think of it as a somewhat broadened ergosphere of the Kerr model. And
no, we won't get into frame dragging.
Quote: You're engaged in some frantic arm
waving here.... Nothing but more frantic
arm arm waving.
That's supposed to be *hand* waving, isn't it?
Ahswah mammy, I plumb give up on dat boy. <g>
oc |
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| John Zinni |
Posted: Sun Dec 21, 2003 9:02 pm |
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"Bill Sheppard" <oldcoot@webtv.net> wrote in message
news:28906-3FE5DB5B-155@storefull-3174.bay.webtv.net...
Quote: Again, by what mechanism do you
propose that the accreting material
obtains a component of velocity directed
towards the poles???
OK let's try it again. Bert has no trouble understanding it.
Yes ... well ... surprisingly enough, this doesn't actually bother me all
that much.
Quote: A spinning
body gravitates most strongly at the poles and least strongly at the
equator, due to the centrifugal effect (centrifugal _effect_ , not
"force" lest we get into a quibble over semantics).
The effect of which you speak only expenses itself for objects in
substantive contact with the spinning body.
Quote: The accreting material, as you say, is introduced
radially from the disc, moving inward on the equatorial plane. If the
gravitating body is rotating slowly (like a normal star), there is
negligible polar affinity, so the material simply falls out, largely
onto the equatorial regions.
But then you have neutron stars, which can have spin
rates of up to 700 rps, or 42,000 RPM (!). Then black holes, which can
go an order of magnitude higher still. And the accreting material, as it
moves in, encounters this repellant zone. Picture it as shaped like two
cymbals joined back to back. It's 'dimpled in' at the poles- the route
of least resistance *into* the BH, which resides at the exact center of
the system.
There is no "repellent zone" for the infalling material to encounter. There
is nothing of substance that could impart its angular momentum to the
infalling material (unless you want to get into frame dragging, but this
could only hurt your case not help it). The "route of least resistance
*into* the BH" is the route that the material is following. It would take
some fairly dramatic dynamic back flips in order to impart a component of
velocity in the polar direction.
You're engaged in some frantic arm waving here.
Quote: In order for the radially-moving infall to reach the
poles, it must cleave into two flows, riding 'up and over' the repellant
zone, finally plunging axially, head-on, into the poles.. as
mirror-imaging twin 'bathtub drain' vortices aligned on the polar axis.
The higher the BH's spin rate, the more acutely the infalls must align
to the polar axis.
Again, this bipolar accretion mechanism would be apparent
only in extreme close-up. oc
Nothing but more frantic arm waving. |
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| G=EMC^2 Glazier |
Posted: Mon Dec 22, 2003 4:43 am |
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Hi oc Well if blackholes are created by a great explosion than what
greater explosion than the big bang. We might be able to tell a big bang
explosion blackhole from a supernova explosion blackhole this way.
Supernova blackholes have a great speed of spin. Well I have a gut
feeling I'm right. Who can prove me wrong? Bert |
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| G=EMC^2 Glazier |
Posted: Mon Dec 22, 2003 12:13 pm |
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Chuck you are right BH are the implosion of an explosion. I've even said
that most of the tim.e To make me think other wise\ Astronomers like to
confuse me. Bert |
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| Chuck Taylor |
Posted: Mon Dec 22, 2003 1:10 pm |
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"G=EMC^2 Glazier" <herbertglazier@webtv.net> wrote in message
news:29502-3FE702F7-291@storefull-3175.bay.webtv.net...
Quote: Hi oc Well if blackholes are created by a great explosion than what
greater explosion than the big bang.
Who said black holes are created by a great explosion? The other supernova
remnants are created by a great explosion. But the black hole is created by
a great collapse (implosion).
Clear Skies
Chuck Taylor
Do you observe the moon?
Try the Lunar Observing Group
http://groups.yahoo.com/group/lunar-observing/
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| Odysseus |
Posted: Mon Dec 22, 2003 7:22 pm |
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Chuck Taylor wrote:
Quote:
Who said black holes are created by a great explosion? The other supernova
remnants are created by a great explosion. But the black hole is created by
a great collapse (implosion).
Moreover while the popular expression "big bang" seems to imply an
"explosion" it's something of a misnomer: the expansion *of* space
itself is qualitatively quite different from the explosion of a
supernova (or any other 'bomb-like' phenomenon) *into* the space that
surrounds it.
--
Odysseus |
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| G=EMC^2 Glazier |
Posted: Tue Dec 23, 2003 6:29 am |
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Chuck Right you are. That means BH were created by the "implosion" of
the big bang(yes) Bert |
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| G=EMC^2 Glazier |
Posted: Tue Dec 23, 2003 6:47 am |
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Odysseus Since I have gravity as creating the big bang my thoughts have
always been that the big bang was an implosion to create great
pressure,and heat to create all there is,and this implosion(bounced
back) and gave off these particles to fly though space,and we call this
bounced back an explosion. I have posted this over the years. In my
mind I have gravity compressing the vacuum energy of space into
particles that came into existence in our macro four dimensional
universe. This fits well with QM,and the string theory. This is why I
came up with my equation G=EMC^2 Bert PS Witten's branes I can
fit in nicely for it gives the added dimension that helps my thinking a
lot |
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| Bill Sheppard |
Posted: Tue Dec 23, 2003 8:28 am |
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Quote: The ergosphere of a Kerr BH is defined
by its frame-dragging characteristics.
Perhaps we need to postpone this
discussion....
If yer gonna talk about frame dragging, you need to clearly establish
what is dragging what; Is matter dragging space as is commonly supposed?
(If space is 'nothing', how can it be dragged? Hmm.) Or, is space
dragging matter, as is the case in the flowing-space model of gravity?
oc |
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| John Zinni |
Posted: Tue Dec 23, 2003 10:28 am |
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"Bill Sheppard" <oldcoot@webtv.net> wrote in message
news:28907-3FE6857C-90@storefull-3174.bay.webtv.net...
Quote: There is no "repellant zone" for the
infalling material to encounter. There is
nothing of substance that could impart its >angular momentum to the
infalling
material...
Think of it as a somewhat broadened ergosphere of the Kerr model. And
no, we won't get into frame dragging.
"Think of it as a somewhat broadened ergosphere of the Kerr model."
"And no, we won't get into frame dragging."
These two statements are contradictory. The ergosphere of a Kerr BH is
defined by its frame-dragging characteristics. Perhaps we need to postpone
this discussion until you publish the "Sheppard Metric."
Quote:
You're engaged in some frantic arm
waving here.... Nothing but more frantic
arm arm waving.
That's supposed to be *hand* waving, isn't it?
I thought "arm waving" panted a more frantic picture.
Quote: Ahswah mammy, I plumb give up on dat boy. <g
oc
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