A5100436836- Black Holes and Theoretical Physics
- Noncommutative and Quantum Gravity Theories
- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Quantum Electrodynamics and Casimir Effect
- Nuclear physics research studies
- Stellar, planetary, and galactic studies
- Astrophysical Phenomena and Observations
- Radio Astronomy Observations and Technology
- Superconducting Materials and Applications
- High-pressure geophysics and materials
- Astrophysics and Cosmic Phenomena
- Quantum, superfluid, helium dynamics
- Particle Detector Development and Performance
- Statistical Mechanics and Entropy
- Thermoelastic and Magnetoelastic Phenomena
- Particle physics theoretical and experimental studies
- Space Technology and Applications
- Astronomy and Astrophysical Research
- Hydrogels: synthesis, properties, applications
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle accelerators and beam dynamics
Qilu Normal University
2019-2024
China West Normal University
2007-2023
Institute of Theoretical Physics
2006-2015
Chongqing University
2009
Abstract The Kinnersley spacetime not only describes a non-spherical symmetric, non-stationary and accelerating black hole, but also can be used to explore the characteristics of collision two holes because it has horizons: Rindler horizon event horizon. Previous research shows cannot touch due violation third law thermodynamics. By solving fermion dynamical equation including Lorentz dispersion relation, we obtain modified radiation temperature at as well colliding point We find is equal...
TianQin is a future space-based gravitational wave observatory targeting the frequency window of $10^{-4}$ Hz $\sim 1$ Hz. A large variety sources are expected in this band, including merger massive black hole binaries, inspiral extreme/intermediate mass ratio systems, stellar-mass Galactic compact and so on. will consist three Earth orbiting satellites on nearly identical orbits with orbital radii about $10^5$ km. The form normal triangle constellation whose plane perpendicular to ecliptic...
Abstract We report the discovery of a new 5.78 ms period millisecond pulsar (MSP), PSR J1740−5340B (NGC 6397B), in an eclipsing binary system discovered with Parkes radio telescope (now also known as Murriyang) Australia and confirmed MeerKAT South Africa. The measured orbital period, 1.97 days, is longest among all binaries globular clusters (GCs) consistent that coincident X-ray source U18, previously suggested to be “hidden MSP.” Our XMM-Newton observations during NGC 6397B’s...
We report on a comprehensive multi-wavelength study of the pulsars in globular cluster (GC) M5, including discovery M5G, new compact non-eclipsing "black widow" pulsar. Thanks to analysis 34 years radio data taken with FAST and Arecibo telescopes, we obtained phase-connected timing solutions for four clusters improved those other three known pulsars. These have resulted in, among things: a) much proper motions five pulsars, transverse velocities that are smaller than their respective escape...
The Five-hundred-meter Aperture Spherical Telescope (FAST) will begin its early-science operations during 2016. Drift-scan pulsar surveys be carried out this period using an ultra-wide-band receiver system (covering ∼ 270 to 1620 MHz). We describe a method for accounting the changes in telescope beam shape and parameters when searching pulsars over such wide bandwidth. applied simulated data sets of globular clusters that are visible FAST found representative observation would have...
The quantum tunneling radiation of fermions with arbitrary spin at the event horizon Kerr-de Sitter black hole is accurately modified by using dispersion relation proposed in study string theory and gravitational theory. derived rate temperature horizons are analyzed studied.
β decay in the strong magnetic field of crusts neutron stars is analysed by an improved method. The reactions 67Ni(β−)67Cu and 62Mn(β−)62Fe are investigated as examples. results show that a weak has little effect on but (B>1012G) increases rates obviously. conclusion derived may be crucial to research late evolution nucleosynthesis r-process.
According to the Lorentz Invariance Violation originated from quantum gravitational theory and string theory, Rarita-Schwinger equation of arbitrary spin fermions are exactly modified in high energy case. Then we restudy dynamic with charged Kerr-Newman-Kasuya (KNK) black hole space-time. Moreover, tunneling radiation characteristics studied according equation. Therefore, some new expressions for physical quantities such as rate, surface gravitation, Hawking temperature entropy corrected. As...
Abstract We studied the correction of quantum tunneling radiation fermions with spin 1/2 in Kerr anti-de-Sitter black hole. First, dynamic equation was corrected using Lorentz’s violation theory. Second, new expressions rate, Hawking temperature hole and entropy were obtained according to equation. Our results show that increases enhancement both coupling strength radial component ether-like field, but is independent non-radial components field. At last, some comments are made on our work.
According to the dispersion relation that stems from string theory and quantum gravitational theory, we study dynamic equation of fermions, is Rarita–Schwinger equation. Based on Lorentz modified in high-energy case, arbitrary spin fermions accurately corrected Kerr Anti-de Sitter black hole, then action with computed. To do so, obtain new expressions for tunneling rate, Hawking temperature entropy hole. At last, some comments are made results our work.
We study the characteristics of quantum tunneling radiation scalar bosons in stationary Kerr-anti-de Sitter black hole based on Lorentz symmetry violation theory. First, Klein-Gordon equation and Hamilton-Jacobi that are corrected by theory curved space-time obtained. After solving dynamic bosons, it is shown Lorentz-violating has an effect hole's Hawking rate, temperature entropy. At last, some comments made results our work.
A new improved nuclear partition function is employed to calculate the statistical equilibrium (NSE) in core-collapse supernova environment. The results show that change of nucleus abundance slight even though temperature higher than 1011 K when shock propagates, which indicates effect not so important as shown previous calculations, but it can also be considered detailed simulation if sensitive weak interaction rates supernova.
According to a corrected dispersion relation proposed in the study on string theory and quantum gravity theory, Rarita-Schwinger equation has been precisely modified, which results Rarita-Schwinger-Hamilton-Jacobi equation, through which, characteristics of arbitrary spin fermions tunneling radiation from non-stationary Kerr-de Sitter black hole are researched. A series accurately physical quantities such as surface gravity, chemical potential, probability Hawking temperature that describe...
The quantum tunneling radiation of arbitrarily dimensional Reissner–Nordström black hole is corrected by beyond semiclassical theory and Lorentz symmetry violation theory, resulting in new expressions for the rate scalar particles Hawking temperature at horizon hole. physical significance our results thermodynamic evolution characteristics are also discussed.
With the introduction of CFJ correction term, Chiral and aether-like based on Lorentz breaking, WKB approximate, quantum tunneling radiation theory black holes, modified fermion dynamics equation is studied in general non-stationary spherically symmetric hole space-time, new expressions rate, Hawking temperature, Bekenstein–Hawking entropy are obtained. This has both thermal non-thermal radiation. In this article, influence breaking energy levels Dirac particles was also studied,...
Abstract Considering the Lorentz breaking theory, correct modified forms of dynamic equations bosons and fermions in curved space-time are studied. For new form equation through spin 1/2 Dirac particles black hole gravity’s rainbow, by introducing aether-like vector field correctly constructing gamma matrix, meaningful expressions Hawking temperature, tunneling rate Bekenstein-Hawking entropy this obtained. In addition, distribution characteristics energy levels also studied, results The...
In the space-time of nonstationary spherical symmetry Vaidya-Bonner black hole, an accurate modification Hawking tunneling radiation for fermions with arbitrary spin is researched. Considering a light dispersion relationship derived from string theory, quantum gravitational and Rarita-Schwinger equation in space-time, we derive accurately modified dynamic spin. By solving equation, rate spin, temperature, entropy at event horizon hole are presented. We find that temperature will increase,...
Precise measurements of neutron star (NS) velocities provide critical clues to the supernova physics and evolution binary systems. Based on Gaia Data Release 2 (DR2), we selected a sample 24 young (<3 Myr) pulsars with precise parallax measured velocity their local standard rest (LSR) dispersion among respective stellar groups. The median difference between thus calculated LSRs Galactic rotation model is ~7.6km/s, small compared typical ~27.5km/s. For off plane, such differences grow...
Considering the modified Lorentz dispersion relation, combined with Dirac equation and Rarita–Schwinger of fermions in stationary axisymmetric Sen black hole space–time, fermion tunneling radiation is accurately, meaningful physical quantities such as rate, event horizon temperature, entropy are obtained. The discussion conclusions shows that effect relation violation theory on particle dynamics must be considered curved space–time during study quantum Hawking radiation.
By using an average heavy nuclei model, the effects of electron screening on capture (EC) in core-collapse supernovae are investigated. A one-dimension code based Ws15$M_{\sun}$ progenitor model is utilized to test during collapsing process. The results show that, at high densities, EC becomes significant. During stage, rate decreased, collapse timescale prolonged and leakage neutrino energy increased. These lead appreciable decrease initial bounce shock wave. screeening other models also discussed.
Based on shell model of nuclei, the influence a high magnetic field β+ decay in crusts accreting neutron stars is analyzed. The effect 54Mn discussed. results show that weak makes little but strong (B>1011 G) improves rates obviously. conclusion derived will benefit to develop further research nuclear astrophysics future.