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Re: [Phys-L] TWO QUESTIONS



My modified model, (described yesterday) no longer refers to a collision of two stars. It is it refers to two piston-like disks (M>>>m) in the vacuum. Is this model acceptable? If not then what is wrong?

Ludwik
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On Apr 4, 2016, at 4:32 PM, LaMontagne, Bob wrote:

I am envisioning two massive black holes or stars approaching each other in a straight line. They collide and catastrophically merge into a single object. I then think of a planet/spacecraft a long distance away on the perpendicular bisector of the line of approach of the two massive objects. I see a case for GR gravitational waves, but not Ludwik's classical waves (at least not with the clear cut classical explanation he is looking for.)

Bob at PC



________________________________________
From: Phys-l <phys-l-bounces@www.phys-l.org> on behalf of Moses Fayngold <moshfarlan@yahoo.com>
Sent: Monday, April 4, 2016 8:35 AM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] TWO QUESTIONS

On Friday, April 1, 2016 3:33 PM, Carl Mungan <mungan@usna.edu> wrote:



Suppose our Sun is hit by a star of equal mass, traveling in the opposite direction.

Relative to what: the center of the Milky Way? In other words, what initial speed of the Sun are you supposing?

Actually, the initial question is a little bit ambiguous, since it does not specify the initial speeds of the Sun and the oncoming star. Hence Carl Mungan's question is quite appropriate. But even if both initial velocities are given (say, relative to the center of our galaxy), I think, the most convenient way for solution would be to switch to the reference frame in which the net momentum of the system (Sun+oncoming star) is zero (unless this had also been assumed from the very beginning).
Moses FayngoldNJIT
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