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Does gravitational waves from two neutron-star mergers reveal quark-gluan plasma.



Physicists in Germany have concluded that the quark-gluon plasma can be detected through gravitational waves by neutron star mergers, providing us with important information for testing theories. Researchers say how a computer simulation of a quark-glow plasma can be done when a neutron star is merged.  Researchers believe that matter remains in both a hot and dense state, and this gives evidence that it existed in the early universe.

In 2017, a fusion of neutron stars was detected by the LIGO Observatories, which had only 70 observatories on Earth, capable of recording phenomena on optical or gamma waves. Researchers used to say that gravitational waves are detected when two neutron stars are released or when two black holes are dissolved, and being able to observe the same phenomena in electromagnetic waves and gravitational waves is called multimuscular astromy. In August 2017, the first time gravitational waves were detected, Ligo observatories first detected gravitational waves from two merged neutron stars.

Quantum chromodynamics was invented in the 1960s by which it can be explored how, under normal conditions, strong atomic force limits quarks to form discrete particles called halons by gluons - including protons and neutrons.  Huh. When at sufficiently high temperatures and pressures, hadrons merge into a soup of free quarks and gluons, known as quark-gluon plasma or quark substances.  Since 20 years ago when the first solid observations of quark-glucose plasma were made by breaking the lead ions together at CERN, minute quantities of the material have been made on other accelerators, and studied in more detail.

 Researchers believe that the Quark Era began about 10–12–10–6 seconds after the Big Bang, a universe too hot and dense to be bound into the Herdron of the Quark, the Quark Era was thought to contain the Quark-Glon plasma.  Is, because quark-gluon is also of great interest to plasma physicists, who can help study the early universe. To understand the detailed properties of such a case, cosmologists help to bring the evolution of the universe back towards the Big Bang.

An open question for researchers today is whether a stable quark – gluan plasma exists in a stable universe, Edward Witten proposed in 1984, that quark is the fundamental state of matter. Says Luciano Rezola, a theoretical astrologer at the Institute for Theoretical Physics in Frankfurt. Many astronomers around the world once believed that all stars in the Universe would be made up of quark matter, but some recent research and more recent observations have made it a minority view, because when scientists were asked,  How many of the pure quark stars in the Universe exist, so he had an answer in this, that there can be only a few.

Lucola Weah, a PhD student at Rezolla, said that the center consists of hybrid stars with degenerate quarks, where the pressure is highest, known as a normal neutron star.  As we know, neutron stars with the highest central pressure are the heaviest, which increases the enticing probability of two lighter neutron stars in a binary orbit, and it undergoes a phase transition in such a heavy hybrid star.

 In new research, Rezola, Weah, and Matthias Hanoske reported in their new research that binary neutrons are 2.64 or 2.68 times the mass of the Sun compared to computer models of mergers between stars. This new model predicts the gravitational wave signals produced in the merger, and if there is no phase transition, or an immediate phase transition upon the merger, the generated signals have previously been calculated by other research groups. Researchers in Frankfurt have induced a phase transition-triggered core-collapse to form a black-hole, and a gradual post-merger phase transition into a hybrid neutron star with a quark-glow plasma at its center.

 Researchers believe that if there is no phase transition, such as, for example, the frequency of gravitational waves should remain constant over time after a neutron star merges. If the star undergoes a gradual phase transition, their frequency must climb over the course of a few milliseconds, and furthermore, if some signal processing occurs, it is revealed that the purely hadronic case would have given a peak in the frequency spectrum. Weah says that if there is a phase transition in the quark – gluon plasma, we also get a second peak.

  A new research describes the Physical Review Letters, which states astronomer David Radis at Pennsylvania State University in the US, that this is a very interesting paper, but no one has yet given the correct model, and no This is not the first paper to look at the effects of phase transitions in neutron star binaries. Some researchers believe that in order to understand how we should behave at high density, we have to perform simulations with it, but we have many different models, which are predicting things opposite to each other Yes, researchers have parameterized this uncertainty, and have also considered all possibilities. Weah states, that the interpretation of gravitational wave data is an embryonic art, which makes many things uncertain, as, for example, nothing but the cause of two frequencies appearing in the signal after the two neutron stars merge, And which is accompanied by a phase transition.

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