'New Twists on the Milky Way's Big Black Hole'

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20 years 11 months ago #7430 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Rudolf</i>
<br />What will or should the centre of the milky way look like based on the Meta model? Would there be a single object to talk about or is it because of the combined gravities of all rotating objects around this centre?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

In MM, there is no size limit to large stars as there is in conventional models, where stars over about 100 solar masses burn themselves out in a few million years. Gravitational shielding prevents that from happening in MM. So the Galactic center probably contains a supermassive single star closely accompanied by a dense cluster of neignboring, high-mass stars. -|Tom|-

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20 years 11 months ago #7302 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
Although I agree in principle, would'nt such a massive star have been detected already? Because it is not a 'black hole' would'nt its light be visible to observers outside? Such an object (based on your model and what you have described here) sould be very bright unless it somehow is still able to prevent light from escaping (making it kind of a 'black hole' by definition).
Or perhaps it does not radiate light energy because it is so dense?

Would there be any way to detect it then?

Rudolf

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20 years 11 months ago #7178 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Rudolf</i>
<br />Such an object (based on your model and what you have described here) should be very bright unless it somehow is still able to prevent light from escaping (making it kind of a 'black hole' by definition).<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

It would then be a "Mitchell star" by definition, an ordinary star whose gravity prevents the escape of light.

However, we don't need anything that exotic. Between the extreme redshift of the star because of its mass, and the obscuration of most visible light from the Galactic center, it would be intrinsically bright and we still couldn't see much evidence of it other than radio emission, which is seen. -|Tom|-

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20 years 11 months ago #7231 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
I take it that what the observers in the article claim they are seeing is not the galaxy centre but possibly only a star system close to the centre?
The orbital rates they claim are very fast even for a plain star system. What would the effects be on and in a "Mitchell star" of rotation of objects and the star itself?
If a pulsar can rotate within milliseconds how fast can a more dense object rotate?
It let met wonder about effects like magnetic fields being generated on a massive scale by this object. This in part can generate the whole milky way magneric field.

Rudolf

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20 years 11 months ago #7048 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Rudolf</i>
<br />What would the effects be on and in a "Mitchell star" of rotation of objects and the star itself?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

None I can think of that could be seen from this distance.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">If a pulsar can rotate within milliseconds how fast can a more dense object rotate?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Slower than that. Its outer parts must not exceed the speed of light, but it would be larger than a pulsar. -|Tom|-

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20 years 11 months ago #7049 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
This might be a dumb question but why would the outer parts be limited by the speed of light? We are not talking waves here but super dense material moving - probably like a solid sphere or shell. Is there then an upper limit at which objects can spin and what happens if they get close to that limit?

Rudolf

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