Lensing Effect for Stars Near Sagittarius A*

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15 years 5 months ago #22837 by Jim
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Could this missing effect also suggest the supermass at the center of the galatic disk does not exist?

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15 years 5 months ago #23636 by Larry Burford
Jim,

That is one possibile explanation, but then what are all of those stars orbiting?

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15 years 5 months ago #22840 by Jim
Replied by Jim on topic Reply from
LB, By "all those staes" I assume you mean the stars in the galatic disk. The dynamics of a disk structure forced by gravity needs to be examined with an understanding the disk has mass that is not located anyway near the middle of the disk. The mass of a galaxy is spread out all over the disk which means using the rules that work pretty well for a system like the solar system where 99.9% of the mass is located at the central star won't work at all. New rules need to be worked out to understand the dynamics of a galatic structure.

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15 years 5 months ago #22841 by Thomas
Replied by Thomas on topic Reply from Thomas Smid
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Jim</i>
<br />LB, By "all those staes" I assume you mean the stars in the galatic disk. The dynamics of a disk structure forced by gravity needs to be examined with an understanding the disk has mass that is not located anyway near the middle of the disk. The mass of a galaxy is spread out all over the disk which means using the rules that work pretty well for a system like the solar system where 99.9% of the mass is located at the central star won't work at all. New rules need to be worked out to understand the dynamics of a galatic structure.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

No, with "all those stars" Larry and I mean those in Fig.9 on the page www.extinctionshift.com/SignificantFindings08.htm . The motion of these stars is only consistent with a supermassive object of 4 miilion solar masses. But if one plugs the corresponding values into the lensing formula, one finds that the stars should not appear that close to the center, but 45 times further away.

Thomas

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15 years 5 months ago #22842 by Jim
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Thomas, Your Fig9 looks to me like a cartoon because the orbiting stars are moving too far too fast. How fast are these stars going?

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15 years 5 months ago #22849 by Thomas
Replied by Thomas on topic Reply from Thomas Smid

Jim, first of all, it is not my figure, but I am just referring to it as an illustration.
And of course this is not a real-time movie, but one based on the positions over a period of more than 10 years (as you can see from the year numbers in the top left hand corner).

Thomas

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