Astronomers have discovered an object in space, thought it to be a neutron star, but another hypothesis has been put forward about this strange star.
formed from the explosions of large stars (parent stars), when they have exhausted the nuclear fuel in their cores. These parent stars have a mass 8 to 10 times greater than that of the Sun.
This strange star has a very light mass, contrary to scientific theory.
This strange star has a very light mass, contrary to scientific theory. (Illustrative photo: Trust my science).
When these stars explode, their power is neither too large to turn into a white dwarf nor too small to form a black hole. The collapse of this stellar core is accompanied by the explosion of the outer layers forming a supernova.
Neutron stars have high rotation speeds and very strong magnetic fields. Made up of neutrons in a superfluid state, they have an extremely high density: although they measure around 20 km in diameter, their mass is 1.4 to 2.3 times that of the Sun.
Recently discovered stars that scientists believe to be neutron stars have been shown to have a much lighter mass (0.77 times that of the Sun), proving our deficiency in supermassive and dense objects in the universe.
It was discovered at the center of a supernova remnant, named HESS J1731-374scientists initially predicted it would be about 10,000 light years from Earth.
Drawing on modeling of the X-ray spectrum, observations from the Gaia satellite and short wavelengths of a second star, the team recalculated the distance of this much closer neutron star to us, approximately 8,150 light years away.
Since then, scientists have recalculated the mass of this staronly about 0.77 times the mass of the Sun and the radius is 10.4 km.
The research team from Eberhard Karls University in Tübingen, Germany, concluded in the journal Nature Astronomy: “Our estimates imply that This object could be the lightest known neutron star or a mysterious “strange star” that we don’t yet know exists.”
Illustration of a neutron star in space
Illustration of a neutron star in the universe, they have a dense mass of matter and a very powerful magnetic field. (Photo: Future Science).
Physicist Victor Doroshenko, the lead author of the study, hypothesized to explain this object: “Most of the mass of the parent star was separated from the core during the explosion. And the presence of a second star, lingering in the dust clouds from the explosion, could make it lose more material due to the influence of gravity.
On the other hand, “strange star” theory This is also an orientation given by researchers. They suggest that when the core of a large star collapses, it becomes so compressed that neutrons recombine, releasing the subatomic particles (many times smaller than atoms) that compose them and forming a “soup” of strange matter.
Until now, physicists have never found a second such star in the universe, raising the question of whether such a star would be stable enough to exist.
The research team plans to conduct further research to test both hypotheses.
Article source: Dan Tri
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Recently, astronomers discovered an object in space, believing it to be a neutron star, but another hypothesis has been put forward about this strange star.