Changes in the Parameters of a Compact Star Due to the Quark Deconfinement Phase Transition: Comparative Analysis of Maxwell and Gibbs Scenarios | Chapter 4 | Current Perspective to Physical Science Research Vol. 7

We are researching how compact stars are affected by the sudden shift in their properties caused by the quark deconfinement phase transition. The hadronic phase is explained using the relativistic mean-field theory, which includes a scalar-isovector δ-meson effective field. To describe the quark phase, we use the MIT bag model, which considers the interactions between u, d and s quarks within the bag in the one-gluon exchange approximation. We analyze the drastic changes in the parameters of the near-critical configuration of the compact star and calculate the amount of energy released by the corequake in the two extreme cases of deconfinement phase transition scenarios. These scenarios correspond to the ordinary first-order phase transition (Maxwell scenario) and the phase transition calculated by using the bulk Gibbs equilibrium conditions and global charge neutrality (Gibbs scenario).

Author(s) Details:

G. B. Alaverdyan,
Yerevan State University, 1 Alex Manoogyan Str., Yerevan, Armenia.

Please see the link here: https://stm.bookpi.org/CPPSR-V7/article/view/13451

The Central Role of Spin in Celestial Body Motion Mechanics: With Assistance from Gravity, Centrifugal Force and Weightlessness | Chapter 3 | New Trends in Physical Science Research Vol. 5

 The key findings we present in this chapter are that the axial rotation speeds of the solar system planets are linearly related to their masses, that the orbital and axial rotation speeds of the synchronously rotating large, close-in satellites of the gas and ice giants are positively related to the size of their respective mother bodies, and that the larger the stars and even galaxies are, the faster they rotate on their axes and also move radially in space. All of these discoveries show that celestial bodies' axial spin is an intrinsic, autonomous feature, similar to the well-known basic properties of matter, such as the strong and weak nuclear forces, gravity, and electromagnetic. We further claim that this axial rotation of bodies is the foundation of their motion mechanics and how such movements might continue indefinitely. When we analyse how all movements are coordinated to bring order to the cosmos, we can see how all satellite bodies orbit their mother bodies in the same counterclockwise direction as the mother bodies' axial rotation. We realise that for this fundamental attribute of matter to work, it is necessary to coordinate such movements with reciprocal gravity, centrifugal force, and the bodies' weightlessness. As a result, many of the postulates of current cosmology, including as black holes, dark matter, dark haloes, negative energy, and so on, are no longer necessary. When galaxies travel circumferentially through space, Such motions will produce the illusion of the cosmos spinning on its axis, as stated in this chapter.

Author(s) Details:

Puthalath Koroth Raghuprasad,
2400 e. 8th Street, Odessa, Texas-79761, U.S.A.

Please see the link here: https://stm.bookpi.org/NTPSR-V5/article/view/7159

3.55-keV Anomaly as the First X-ray Laser in Space| Chapter 10 | Research Trends and Challenges in Physical Science Vol.8

 Under near binary star systems consisting of a red giant and a neutron star, the 3.55-keV Ly-(alpha) line of the hydrogen-like 14Si can be created in a 6x1012 G magnetic field. 14Si ions in the magnetic column of binary neutron stars transmit this recombination radiation to the ground Landau level. In magnetic fields of 4x1012 – 1013 G, the Ly-(alpha) transition energy for hydrogen-like 14Si is computed. If the 3.55-keV line is a laser line, it can be seen up to z (leq) 100 red shifts. This line is most likely an X-ray candle produced by a large amount of silicon in these close binary systems in the universe. Due to the complicated geometry in such binary systems, the 3.55-keV line is unique. Other hydrogen-like ions can also emit laser radiation in the (1–20)-keV energy range. A laser line will always be narrowed. It is also mentioned that there are thermal X-ray sources in space that generate lines in the keV range.

Author(s) Details:

Vladimir Burdyuzha,
Nuclear Physics and Astrophysics Department, Lebedev Physics Institute, Russian Academy of Sciences, Moscow 117997, Russia.

Please see the link here: https://stm.bookpi.org/RTCPS-V8/article/view/6016

An Advanced Study on the Creation of Neutron Stars and Black Stars and How the Chandrasekhar Limit Prevents the Creation of Intermediate Black Stars | Chapter 5 | New Insights into Physical Science Vol. 12

 A supernova remnant with a mass between 1.44 and 2.2 solar masses contracts down to a neutron star, according to a programme written in Excel. The declining gravitational potential slows time during the collapse. The pressure rises to the point that the contraction comes to a halt. Although the remnant is still contracting at greater than 2.2 solar masses, the gravitational potential causes time to relativistically freeze at the core, preventing the contraction until the pressure increases sufficiently to stop it, as it did in a neutron star. This also stops the flow of knowledge about the gravitational potential decline, so the frozen parts stay frozen and don't contract any more, becoming hypothetical. Additional matter physically and relatively contracts on top of the frozen core, and the radius of the freeze point goes out. If the freeze made it all the way to the surface, it would be a black hole with a Schwarzschild radius, but it doesn't quite make it. The field isn't absolutely frozen. Even if these "almost black holes" lack an event horizon, they are nearly as small as the Schwarzschild radius and are difficult to see due to gravitational red change. There has been the formation of a black star. As a white dwarf with a mass greater than the Chandrasekhar limit of 1.44 solar masses contracts, the inner core is compressed to a density of more than 1x109 kg/m3 due to the high pressure and gravity. It would have a minimum density of 3.5 x 1015 kg/m3 near the surface after cooling and collapsing into a neutron star. This article discusses how these two densities apply to why supernova-created stellar black stars have a mass of less than 15 solar masses and supermassive black stars have a mass of more than 50,000 solar masses. The traditional black hole model is incapable of extracting such constraints, but the black star model has exposed them, as well as many others. Between the largest SBS and the smallest SMBS, a distance of missing black stars was discovered using this model. This has to do with the density difference that occurs as pressure compresses unstable matter from degenerate white dwarf matter to neutron matter.

Author (s) Details

P. David Clark
612 N Sandpiper, Ingleside on the Bay, Texas 78362, USA.

View Book :- https://stm.bookpi.org/NIPS-V12/article/view/283