The team of Astronomers have found a mystery neutron star that is far lighter than previously thought feasible, weakening our sympathetic of the physics and evolution of stars. And fascinatingly, quarks might make up a sizable portion of it.
The neutron star is described in full in
a new paper that was just released in the journal Nature Astronomy.
Its radius is barely 6.2 miles, and its mass is only 77% that of the Sun.
That makes it more lighter than other
neutron stars that have been previously analyzed, which typically have a mass
that is 1.4 times that of the Sun at the same radius.
Therefore, the group of astronomers suggests that it might be a whole different kind of star, led by Victor Doroshenko of Germany's Eberhard Karls University in Tübingen.
The
centre compact object in HESS J1731-347 is currently the lightest neutron star
known to date and may even be a candidate for a "weird star,"
according to the paper.
Neutron stars are often created after supergiant stars go supernova, making them some of the densest objects in the known universe.
The star's core may then explode, compression
all of that mass into a very compact object. a sole teaspoon of a neutron star,
according to calculations by experts, would mass 2.2 trillion pounds.
However, this recently discovered object
defies our knowledge of bounds and classifications.
Using data from the European Space
Agency's Gaia spacecraft, Doroshenko and his team discovered that the star is
actually considerably closer to us than we previously believed. This allowed
scientists to recalculate the enigmatic star's mass.
Though the resulting mass and radius just
do not fit into our current definition of a neutron star, the team believes
that this new discovery may be a contender for a "weird star."
Strange stars are speculative
celestial objects thought to be made up of largely of "strange quark"
matter, which enables them to have temperatures and masses that are lower than
those of other neutron stars.
The team of Astronomers have also
suggested that strange stars may be behind fast radio bursts, mysterious and potent
bursts of radio pulses that have yet to be explained.
it's an extremely unusual object that
could rewrite our understanding of the universe.
According
to Doroshenko and his team, "Such a light neutron star, regardless of the
assumed internal composition, appears to be a very exciting object from an
astrophysics perspective."

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