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Bernie G
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If a bubble of quark type matter formed near the core of a magnetized neutron star, what would happen to its shape? Would it elongate along the magnetic field lines? Could it burst out of the magnetic poles of the star?
rootone said:As far as I know there have been no observations of objects that might be quark stars
fresh_42 said:But if you're not talking about a quark-gluon-plasma, then those "bubbles" are simply accelerated protons and neutrons, aren't they?
Wouldn’t the radiation and quark type matter in the bubble bounce off the surrounding neutrons for many bounces as the bubble decayed? While decaying shouldn’t the bubble elongate? Would the bubble even be briefly explosive along the magnetic axis? My guestimate is a 2 SM neutron star reaches a gravitational core pressure of ρc2/3 at about 12-km, so shouldn’t core neutrons start to collapse at about this point? If some of the core changed from charge neutral neutrons to ultra relativistic charged particles, could this plasma exit the star along the magnetic axis like plasma escaping a solenoid, either continuously or in bursts?newjerseyrunner said:It would decay, and quickly. A neutron star doesn't have the pressure or heat required for quark-gluon plasma to be stable, even at it's core.
newjerseyrunner said:It would decay, and quickly. A neutron star doesn't have the pressure or heat required for quark-gluon plasma to be stable, even at it's core.
Bernie G said:Consider a hypothetical spherical bubble of quark-gluon-plasma near the core of a magnetized neutron star: Would the bubble elongate along the magnetic field lines or would it remain spherical?
nikkkom said:As of now, we have quite limited knowledge of properties of "quark-gluon-plasma" to give meaningful predictions.
newjerseyrunner said:It would decay, and quickly. A neutron star doesn't have the pressure or heat required for quark-gluon plasma to be stable, even at it's core.
Bernie G said:We know that IF neutral neutrons collapse to hot charged quark matter that the hot charged quark matter should be affected by a magnetic field.
Bernie G said:Could the jets from a magnetized neutron star be caused by neutrons in the core collapsing into ultra relativistic quark matter that escapes out of both ends of a solenoid?
nikkkom said:Quarks also interact via color forces, they are much stronger than electromagnetism, but have peculiar properties such as asymptotic freedom.
newjerseyrunner said:It would decay, and quickly. A neutron star doesn't have the pressure or heat required for quark-gluon plasma to be stable, even at it's core.
Bernie G said:That sounds correct for a non-magnetized core. Here's my guess for a non-magnetized core: Collapsed mass at the core probably just heats the star, but what an enormous amount of heat. If core collapse directly converts 1/10,000 of a neutron star's mass to heat, that's like adding 100,000 eV of heat to a proton, or 10^9 degrees K.
I think the heat from collapse in the core could be much greater than heat from surface fusion reactions of accreting hydrogen. Could this radiated heat (originating from collapse in the core) be the main process that limits the mass of non-magnetized neutron stars? It seems weird.
Neutron collapse should not happen in the core except during it's creation. Neutron matter should be denser than regular matter, so it'll end up in the middle. There is nothing in the core to turn into neutron matter, the only place for matter to go at this point is quark matter and other forms of degenerate matter, then finally, a black hole.Bernie G said:Thank you for that thought stimulating information. But what limits the mass of old neutron stars to about 2 solar masses? Could neutron collapse occur in the core? Do old neutron stars emit neutrinos? I read that just the formation of neutrons results in neutrinos, but that doesn't explain the mass limitation. Could collapse of neutrons at the core of an old neutron star release energy that would (1) diffuse thru the star and heat the entire star? (2) escape out the magnetic poles? (3) something else?
newjerseyrunner said:Neutron collapse should not happen in the core except during it's creation.
A quark matter bubble is a theoretical structure that may form within the core of a neutron star. This bubble is made up of quark matter, which is a hypothetical state of matter that is thought to exist at extremely high densities and temperatures.
The strong magnetic field of a neutron star can affect the properties of the quark matter bubble, causing it to take on a more elongated or flattened shape depending on the strength and orientation of the magnetic field.
The shape of the quark matter bubble is determined by a combination of factors, including the density and temperature of the matter inside the neutron star, the strength and orientation of the magnetic field, and the overall stability of the bubble itself.
The shape of the quark matter bubble can provide valuable insights into the internal structure and composition of a neutron star, as well as the strength and direction of its magnetic field. This information can help us better understand the behavior and evolution of these exotic celestial objects.
The shape of the quark matter bubble can influence various physical processes within the neutron star, such as the transport of heat and energy, the generation of magnetic fields, and the emission of radiation. Understanding the shape of the bubble is therefore crucial for developing accurate models of neutron star behavior.