Strange stars and neutron stars

In summary, strange stars are a theoretical concept that have been proposed as being denser than neutron stars and made up of up, down, and strange quarks. While there is evidence that some stars may be made of strange matter, there is still debate and uncertainty surrounding this claim. The origin of the high magnetic field strength of strange stars and neutron stars is also uncertain and it is still unknown if strange black holes can be formed from strange stars.
  • #1
kurious
641
0
Do strange stars exist?
Apparently they are denser than neutron stars and consist of
up down and strange quarks.
But are they theory or reality?
 
Astronomy news on Phys.org
  • #2
They have existed as theory for several years. Last year astronomers thought they had evidence that two known stars were so massive they had to be made of strange matter (as you say, free quarks). There was some controversy over this claim, and I don't know how it stands today.
 
  • #3
arXiv:astro-ph/0403515 v1 22 Mar 2004

the debate goes on!
 
  • #4
This paper gives some information about protostrange stars, the objects that give origin to strange stars
http://arxiv.org/abs/astro-ph/0101011
"The birth of strange stars and their dynamo-originated magnetic fields"
 
  • #6
Strange stars have a mass proportional to R^3 and neutron stars have
a mass proportional to 1 / R ^ 3. What a difference!
It seems that the origin of the high magnetic field strength of neutron and strange stars is uncertain. And no-one can yet say for sure they have found a strange star.
 
  • #7
Could strange black holes propagate from strange stars?
 

1. What is the difference between a strange star and a neutron star?

A strange star is a theoretical type of star composed primarily of strange matter, while a neutron star is a type of compact star composed primarily of neutrons. The main difference is that strange stars are made up of strange quarks, while neutron stars are composed of neutron degenerate matter.

2. How are strange stars and neutron stars formed?

Both strange stars and neutron stars are formed from the gravitational collapse of massive stars. When a star runs out of nuclear fuel, it can no longer generate enough energy to counteract the force of gravity, causing it to collapse. The exact conditions and processes that lead to the formation of strange stars and neutron stars are still not fully understood.

3. Can we observe strange stars and neutron stars?

Neutron stars can be observed using telescopes and other astronomical instruments, as they emit electromagnetic radiation. Strange stars, on the other hand, are still theoretical and have not been observed directly. However, there is ongoing research and efforts to detect and confirm the existence of strange stars.

4. What makes strange stars and neutron stars so dense?

The density of strange stars and neutron stars is incredibly high due to the immense pressure caused by the gravitational collapse of the star. In the case of neutron stars, the density is also due to the repulsive force between neutrons, which prevents them from collapsing further. Strange stars, with their unique composition of strange quarks, may have even higher densities than neutron stars.

5. Are there any potential applications of strange stars and neutron stars?

While there are currently no known practical applications of strange stars or neutron stars, they have been studied extensively as they may provide insight into fundamental physics and the conditions of the early universe. Neutron stars, in particular, have been used in the study of gravitational waves and can also potentially serve as natural laboratories for extreme physics.

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