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Frost Bite
2014-Jan-27, 03:21 PM
Could you science trained folk help with a question I have regarding black holes?

I seems to me that the natural/logical progression from a failed creation of a black hole(Neutron star) to a successful creation of a black hole would be a "down quark sphere". Since neutrons are made of 1 up quark and 2 down quarks, with QCD matter thought to be the core of Neutron stars, is there a physics(QM or Standard) reason why this can't be possible(down quark sphere), which is the reason I can't find any theories related to a down quark sphere?

I'm not trained in the sciences, so was hoping I could get reasons one way or another from those with education in the fields.
Thanks in advance.

Strange
2014-Jan-27, 04:09 PM
I seems to me that the natural/logical progression from a failed creation of a black hole(Neutron star) to a successful creation of a black hole would be a "down quark sphere". Since neutrons are made of 1 up quark and 2 down quarks, with QCD matter thought to be the core of Neutron stars, is there a physics(QM or Standard) reason why this can't be possible(down quark sphere), which is the reason I can't find any theories related to a down quark sphere?

There is the hypothetical quark star: https://en.wikipedia.org/wiki/Quark_star

Frost Bite
2014-Jan-27, 05:08 PM
Thank you, Strange.

Am I reading Quark/Strange Stars correctly in that they are theoretically composed of a mix of up/down/strange quarks, rather than just a single type of quark?
It also lead me to Preons, and Preon Stars under the Exotic stars. "However, current observations from particle accelerators speak against the existence of preons", do you know of more recent publications on Preons, or can the Wikipedia entry be considered up to date at this time?

antoniseb
2014-Jan-27, 09:12 PM
...Am I reading Quark/Strange Stars correctly in that they are theoretically composed of ... preons ...
These questions of yours are off topic for this thread. Shall we create a new thread for you about this?

Frost Bite
2014-Jan-27, 09:25 PM
If you wish to, antoniseb.
I realize it is wandering off topic from Professor Hawking's paper. Whatever you decide is best, I'm in full agreement. It's your house. :)

slang
2014-Jan-27, 09:49 PM
Posts moved from this thread (http://cosmoquest.org/forum/showthread.php?148805-Stephen-Hawking-is-now-saying-there-are-no-black-holes), as they were off-topic there.

Strange
2014-Jan-29, 10:23 AM
Am I reading Quark/Strange Stars correctly in that they are theoretically composed of a mix of up/down/strange quarks, rather than just a single type of quark?

Sorry, can't really add anything to that...


It also lead me to Preons, and Preon Stars under the Exotic stars. "However, current observations from particle accelerators speak against the existence of preons", do you know of more recent publications on Preons, or can the Wikipedia entry be considered up to date at this time?

Nor that, really! I will mention Sundance Bilson-Thompson as someone still working in this area (if only because it is such a great name!)

Frost Bite
2014-Jan-29, 10:47 PM
Sorry, can't really add anything to that...



Nor that, really! I will mention Sundance Bilson-Thompson as someone still working in this area (if only because it is such a great name!)

Thank you, Strange. That helped me get to a theoretical paper relating to the first part of the question.

The name lead me to Sundance Bilson-Thompson's paper:
http://arxiv.org/abs/hep-ph/0503213

Searching "composite preons", I found a nice explanation of LHC Quark Compositeness, with lots of pictures for those of us that are higher maths levels impaired(lack education).
http://www.physics.arizona.edu/4cs2011/webresources/Shupe.pdf

And adding monopolar magnetic fields into the searching I found a theoretical paper relating to the questions I was asking.
"A General Relativistic Model for Magnetic Monopole-Infused Compact Objects" by Zoran Pazameta
http://arxiv.org/abs/1201.6105

Thanks for the help, much appreciated. :)