Neutron Star

old man, relax !! Stick to the point, do not camouflage the thread further.....Why bring Aqueous Id in between, when he is not around....Stop this nonsense...
 
This is the question about what you and Paddoboy (hardcore fans of GR) know about GR, not about GR !! I want to know whether you are objecting from a seat of some knowledge or just shallow babbling. So start typing, how GR is the theory of Gravity ?
So you want it explained to you how Einstein's theory of gravity is a theory of gravity? Like I said this is getting weirder and weirder.
GR tells us that what we call the force of gravity is just the distortion of space time from a mass.
 
old man, relax !! Stick to the point, do not camouflage the thread further.....Why bring Aqueous Id in between, when he is not around....Stop this nonsense...


Still trying to escape having to concede your paper is invalidated?
Still too embarrassed to do that?
You are behind the eight ball Rajesh...You have been check mated.....It's game, set, and match, and your paper has lost.
Do better next time.
That one if I recall correctly is on "matter-energy-matter continuum?? :rolleyes:
Same publishing company I take it.... :)
 
I'm sure all here realise your emotions are getting out of hand with this rather easy invalidating of your paper, from page one Rajesh.
So, O'll let you rant and rave on Rajesh......It appears desperation times for you...sorry about that.
And quickly before I go, GR has been confirmed in near all respects and is beyond doubt within its broad sphere of applicability. And the two or three or more body problem does not invalidate it, if that is the next pseudoscience exercise you are trying to push, then as in your evangelistic mission regarding BH cosmology, you are wrong again.
But keep trying...I'll be here as often as the Mrs allows to help you. :)
 
GR leaves out the impact of gravitational pressure, which creates effects beyond the contraction of space-time. Special relativity contacts space-time using velocity, but this does not add pressure, that I know of. Space ships are not expected to implode as they approach the speed of light. Space-time and pressure are separate, because pressure is force=ma/area with acceleration having the units of space-time-time. The velocity of SR has only space-time and not space-time-time for pressure

This extra time can be seen if we look at the impact of gravitational pressure on vibrational frequencies. The core of the sun is where fusion occurs, inducing the fastest gamma frequencies. A measure of time, frequency, is speeding up even though space-time is most contracted in the fusion core. The two times go in opposite directions.

This extra element of time, due to gravitational pressure, is also how gravity interfaces and integrates all the forces of nature. The magnitude of the extra t impacts which force is being induced. The pressure of the sun's core add the most space-time-time to allow the strong nuclear force to become integrated to the pressure.

I understand the traditions well enough to show where they fall short, and can be improved upon. Science is a work in progress, not the recitation of dogma.
 
So ??
Hint : Now bring in the other masses around (objects) and then ?
So, you didn't understand the simple explanation? Why do you want to play this childish little game, is it to distract us from your failed paper? Jeeze, just accept you were wrong and move on!
Your math knowledge is around early high school algebra based on you little paper, so I really don't know why you want to pursue GR, it is so far over your head that it will be a waste of your time.
 
GR leaves out the impact of gravitational pressure, which creates effects beyond the contraction of space-time. Special relativity contacts space-time using velocity, but this does not add pressure, that I know of. Space ships are not expected to implode as they approach the speed of light. Space-time and pressure are separate, because pressure is force=ma/area with acceleration having the units of space-time-time. The velocity of SR has only space-time and not space-time-time for pressure

This extra time can be seen if we look at the impact of gravitational pressure on vibrational frequencies. The core of the sun is where fusion occurs, inducing the fastest gamma frequencies. A measure of time, frequency, is speeding up even though space-time is most contracted in the fusion core. The two times go in opposite directions.

This extra element of time, due to gravitational pressure, is also how gravity interfaces and integrates all the forces of nature. The magnitude of the extra t impacts which force is being induced. The pressure of the sun's core add the most space-time-time to allow the strong nuclear force to become integrated to the pressure.

I understand the traditions well enough to show where they fall short, and can be improved upon. Science is a work in progress, not the recitation of dogma.
This is the type of pseudoscience crap that got you banned from the science sections last time! I suppose you figure if Rajesh can do it so can you.
 
1. Your UMBH star would take 3 days (72 Hrs) to collapse to singularity from r = 2M, will it not have any surface ? Do not say that the surface is in dynamic compression towards r = 0, a surface under dynamic compression for 72 Hrs will also have p = 0 at the surface...

2. Calculate the density of your this UMBH at r = 2M, it comes out to be 100 times less than that of air. How will it start collapsing ?

3. If at all it does collapse, then calculate the value of 4/3 * 2M and 9/8 * 2M ? What will happen when the star was of that size ? Nothing !

4. And even if it starts collapsing then at what r = ?, the NDP would come into picture, will it be 2M or much below 2M ?

5. Finally let me see what you have understood about this 4/3Rs and 9/8Rs business from an existing NS point of view........if an NS starts collapsing on mass accretion from 10-12 Kms radius, then what would happen when it comes to 4/3 Rs, and what would happen when its core size is less than 4/3 Rs or less than 9/8Rs.....


Copy pasting the calculations or formula from various text books and links is very easy, abusing others and calling others as idiot wind is very very easy........contributing anything positive is difficult and thinking and coming up with new hypothesis is extremely difficult and requires courage. if you have the intellectual capacity then answer the question above. I promise, if you answer correctly, I will acknowledge.........

Rajesh, where did you get the idea that anyone believes that a UMBH forms from an initial massive collapse? While no one can say with any certainty exactly how massive black holes, SMBH and UMBH form, it does not seem to be logical to assume they are the result of the collapse of an initial ultra massive star or mass of any sort. It seems far more likely that black holes begin with the collapse of stellar masses.., into black holes where the total mass and mass density at Rs exceeds the mass and mass density of even neutron stars.

That would leave SMBH and UMBH formation as a process beginning with accretion by stellar mass black holes, or by smaller black holes merging through collision.., even massive or super massive black holes, once independently formed, merging...

It is not logical or reasonable to jump to the conclusion that any SMBH or UMBH formed, as you imply above. That said your questions again don't make sense. What you suggest and/or imply is not consistent with what we do know about gravity. Galaxies don't collapse into black holes because the kinetic energy associated with their orbital velocities counter balance the cumulative effect of gravitation... The same reason our solar system does not collapse into a black hole...

So in #1 the infall time is not the time it takes to form/collapse, it is the time it would take a test particle to fall from Rs to R=0 in the case of an already existing UMBH...

In #2 the average density of a UMBH says nothing about how it, the UMBH was formed. The fact that the average density is as low as it is predicted to be should have been a hint!...

The 4/3Rs and 9/8Rs limits, in#3, have nothing to do with UMBHs, because it is not reasonable to suggest that they formed from the collapse of a single ultra massive object or even ultra massive group of objects, directly into a black hole...

Numbers 4 & 5 stray off into your imagination. As the professor pointed out the 9/8Rs limit assumes an infinitely ridged mass.., not realistic..., and the 4/3Rs limit represents the limit where the speed of sound would equal the speed of light, also not realistic! And as the professor concluded a realistic stable radius would be greater than either 4/3Rs and 9/8Rs... So any realistic collapse occurs from an initial radius greater than those limits.., those limits have no realistic meaning... They are theoretical limits that have value in understanding gravitational dynamics, but no realistic counterpart. Thus the composition of collapding mass would begin to breakdown as soon as its radius is less than its stable radius and be completely degenerated by the time it crosses Rs.
 
I did not say, it will become infinitely strong.....I just said there is a possibility that NDP may balance Gravitational Pressure as the Neutrons have become highly relativistic thus increasing the NDP...

You have said this but you have not proven it and it is not consistent with our current understanding.

by the way if the entire mass goes to r = 0, does it not become infinitely strong ? Infinities are allowed at r = 0 but not at r = some non zero value ?? Yeah !! Read Kerr Metric ring singularity also..

The short answer is no! No physical characteristic can be associated with the singularity at R=o. As I have mentioned earlier, and you choose not to acknowledge, no one has asserted that the singularity represents anything real! It remains a placeholder for the mass associated with a black hole, until a better theory of gravity, that can better explain the composition of any mass inside of an event horizon, is developed.

Origin, It is nobody's genuine case that entire mass will go to r = 0, Many Physicists think that some kind of quantum pressure should halt the collapse, but the point is we don't know that yet.........

While the above begins as an accurate statement, it ends with your own assumption and interpretation of what Many Physicists think. It seems you believe that - is - what those working on developing a QTG believe, because you don't understand what they believe!

As a disclaimer here, I cannot keep up with most of the math required to really understand any of the current approaches to quantum gravity, I am aware of.
 
Prof Bennett,

No, Sir...I am not saying that and I am not equipped as on date to counter that. I only stated once before you chipped in that possibly the boundary condition in your analysis is taken as p = 0 at r = Rs, so obviously r < Rs there will not be p = 0, kind of proving the assumed condition. I did not harp on that after your arrival because I thought this argument of mine would not hold, nonetheless I am trying aside to see into this aspect .

But couple of questions came up which are somehow related to this discussion, and hence this continuation....

You have still not answered what would happen to an object which contracts below 4/3Rs and if it survives this then what would happen when below 9/8Rs........

Before you answer, may be you can open it up for other members to respond on this, because an impression is created that every one else has understood the answer to this question...but not me. It will be an eye opener for all.
Rajesh, it seems that you begin the above post by admitting that you do not understand the professor's comments and then go on to ask questions that prove you did not understand his comments!

Take the time to go back and really think through what has been posted... Your questions have been asked and answered. If you don't understand, just asking the same question over is not working.
 
1. GR is primarily a single body solution...you know that wheeler thing that "matter tells spacetime how to curve, space tells matter how to move".

If this were true, GR would not have provided a better explanation for Mercury's orbit.., and many other two body situations.

2. Gravity is primarily a two body thing......

Wrong! Gravity is a many body thing. We just have limitations in our ability to model it as a many body problem.., too many variables.

3. Then how can you say that GR is the theory of Gravity ?
GR began as a description of gravity, improving on Newtonian Mecanics. In a modern conceptual interpretation is does become a theory of gravity itself... But that remains somewhat controversial.

Be clear what you mean!

From where I sit, GR is a very successful description of gravity, but says very little about the fundamental cause of why gravitational fields originate from massive objects.., or in other words, the why of how a massive object affects spacetime, only that they do.
 
This has become nothing more than a food fight guys!
And what was your answer ? Mr Expert !! Copy paste your answer in quote / unquote here....and tell the forum that you still stick to that.

I am proud of all those threads, many people (including you) learnt a lot on the subject, you cannot embarrass me, I am your peer just because both of us are here, otherwise I am far ahead of you....Enjoy !!
And most if not all has been proven to be spot on factual, including this one.
As they come, I'll expose.
 
GR began as a description of gravity, improving on Newtonian Mecanics. In a modern conceptual interpretation is does become a theory of gravity itself... But that remains somewhat controversial.
General Relativity is controversial? Why would you say that? General relativity is an amazingly robust and well supported theory.
 
General Relativity is controversial? Why would you say that? General relativity is an amazingly robust and well supported theory.
Amazingly robust and well supported description of how objects interaction gravitationally.

What is controversial is the modern conceptual interpretation that the curvature of spacetime is the cause of gravitation rather than a geometric description.

Until we can describe how/why the presence of mass results in spacetime geometry, we don't really have a fundamental origin.

GR describes that geometry but doesn't really describe the why of it.
 
Amazingly robust and well supported description of how objects interaction gravitationally.

What is controversial is the modern conceptual interpretation that the curvature of spacetime is the cause of gravitation rather than a geometric description.

Until we can describe how/why the presence of mass results in spacetime geometry, we don't really have a fundamental origin.

GR describes that geometry but doesn't really describe the why of it.
That is kind of silly, it is like saying electricity is controversial because we don't really describe why + and - attract each other.
 
In that case, to you and the other participants of this forum:

"So long and thanks for all the fish."

Bennett Link
Montana State University

Thanks for visiting, Bennett Link.

Members of this Forum are "Mostly Harmless" - however you got exposed to one of the...
 
That is kind of silly, it is like saying electricity is controversial because we don't really describe why + and - attract each other.

...potential...electron flow...actually we know and can describe quite well "why + and - attract each other".

Electronics/Electricity are NOT one of the Theoretical Sciences.

But...you already know this, so...
 
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