Maximum gravity

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21 years 2 months ago #6325 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
Sorry but another question.

If two such objects (Mitchel stars) or it and another big object should collide what would be the resulting effects? For one, during the collition the 'hidden' mass might become visible all of a sudden - pressure released in an explosive way. Could this effect and certain types of supernova or gamma ray explosions be linked?

Also, the sudden change in total gravity might send gravitational shockwaves out (probably at the light speed limit as theorized)
If such an event should occur close by (relatively) like somewhere in our own galaxy the gravitational shock should be detectable around the same time the EM waves hit us. Has anyone tried to look or record such data?

Rudolf

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21 years 2 months ago #6327 by tvanflandern
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>[Rudolf]: Could this effect and certain types of supernova or gamma ray explosions be linked?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

It's an intriguing possibility. But internal explosions rather than collisions are much more plausible and efficient. Collisions would take hours, whereas gamma ray bursts occur in seconds.

<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>the sudden change in total gravity might send gravitational shockwaves out (probably at the light speed limit as theorized). If such an event should occur close by (relatively) like somewhere in our own galaxy the gravitational shock should be detectable around the same time the EM waves hit us. Has anyone tried to look or record such data?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

No instruments existed before LIGO capable of detecting such weak signals. And even LIGO may fail.

Think of gravitational waves as like radio waves, only with longer wavelengths and less energy. -|Tom|-

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21 years 2 months ago #6584 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Collisions would take hours, whereas gamma ray bursts occur in seconds. <hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

That would be true for the whole collision event but the event of actually breaking up and the hidden super compressed material becoming 'visible' (gravitational) would be explosive and cause a quick release of energy? Also, the energy might be focused in one direction depending on how the breakup occurs plus because everything rotates it will point in our direction for only a moment. Are 'gamma ray bursts' event singular in that there is only one spike and repeated spikes afterwards?

Such events should be rare so even if it happens this way, seeing it would be even rarer.

Wouldn’t gravitational shockwaves cause effects to surrounding material and be visible to us? I'm just speculating of course but the topic is very interesting to me.

Thanks for great explanations

Rudolf


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21 years 2 months ago #6335 by tvanflandern
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>[Rudolf]: the event of actually breaking up and the hidden super compressed material becoming 'visible' (gravitational) would be explosive and cause a quick release of energy?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

Why? What is the trigger event? The physical dimensions of the star's core are so great that it would still take at least minutes for an impactor to reach all parts of it.

<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Are 'gamma ray bursts' event singular in that there is only one spike and repeated spikes afterwards?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

No gamma ray event has ever repeated in the same place on the sky. Single events do have sub-structure, even when they last only a fraction of a second.

<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Wouldn’t gravitational shockwaves cause effects to surrounding material and be visible to us?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

"Shock waves" are properties of matter waves from an explosion. Waves that are disturbances in a medium such as gravitational waves, radio waves, or water waves cannot have "shock waves" because their speed is fixed by the medium. But they can be unusually large in amplitude, in which case for water they are called "tidal waves".

We have yet to see a gravitational wave with LIGO, which can measure displacements of 10^-18 meters. Speculation about tidal gravitational waves is therefore not yet supported by any existing observation or data. -|Tom|-


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21 years 2 months ago #6336 by Rudolf
Replied by Rudolf on topic Reply from Rudolf Henning
what's the current explanation or list of explanations for 'gamma ray bursts' events? I recall reading black hole evaporation as one but since they don't exist...?

What is the status of LIGO?

thanks

Rudolf

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21 years 2 months ago #6485 by 1234567890
Replied by 1234567890 on topic Reply from
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>[Rudolf]: the event of actually breaking up and the hidden super compressed material becoming 'visible' (gravitational) would be explosive and cause a quick release of energy?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

Why? What is the trigger event? The physical dimensions of the star's core are so great that it would still take at least minutes for an impactor to reach all parts of it.

<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Are 'gamma ray bursts' event singular in that there is only one spike and repeated spikes afterwards?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

No gamma ray event has ever repeated in the same place on the sky. Single events do have sub-structure, even when they last only a fraction of a second.

<BLOCKQUOTE id=quote><font size=2 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>Wouldn’t gravitational shockwaves cause effects to surrounding material and be visible to us?<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

"Shock waves" are properties of matter waves from an explosion. Waves that are disturbances in a medium such as gravitational waves, radio waves, or water waves cannot have "shock waves" because their speed is fixed by the medium. But they can be unusually large in amplitude, in which case for water they are called "tidal waves".

We have yet to see a gravitational wave with LIGO, which can measure displacements of 10^-18 meters. Speculation about tidal gravitational waves is therefore not yet supported by any existing observation or data. -|Tom|-



<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

Isn't the Cherenkov radiation considered a "shock wave" of the electromagnetic type? It seems that any situation in which a source travels faster than the medium, "shock waves" are produced in the medium ( the waves in the medium get bunched since it can't get ahead of the source of the disturbance). Thus theoretically, gravitational "shock waves" would be produced if 1) gravitational waves exist, and 2) some source causing disturbances in the gravitational medium is traveling faster than the speed limit of the gravitational waves.

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