In this paper,we apply the tunneling of massive particle through the quantum horizon of a Schwarzschildblack hole in noncommutative spacetime.The tunneling effects lead to modified Hawking radiation due to inclusionof...In this paper,we apply the tunneling of massive particle through the quantum horizon of a Schwarzschildblack hole in noncommutative spacetime.The tunneling effects lead to modified Hawking radiation due to inclusionof back-reaction effects.Our calculations show also that noncommutativity effects cause the further modifications tothe thermodynamical relations in black hole.We calculate the emission rate of the massive particles' tunneling from aSchwarzschild black hole which is modified on account of noncommutativity influences.The issues of information lossand possible correlations between emitted particles are discussed.Unfortunately even by considering noncommutativityview point,there is no correlation between different modes of evaporation at least at late-time.Nevertheless,as a resultof spacetime noncommutativity,information may be conserved by a stable black hole remnant.展开更多
In this Letter,we examine the phantom energy accretion onto a Kehagias-Sfetsos black hole in Horava-Lifshitz gravity.To discuss the accretion process onto the black hole,the equations of phantom flow near the black ho...In this Letter,we examine the phantom energy accretion onto a Kehagias-Sfetsos black hole in Horava-Lifshitz gravity.To discuss the accretion process onto the black hole,the equations of phantom flow near the black hole have been derived.It is found that mass of the black hole decreases because of phantom accretion.We discuss the conditions for critical accretion.Graphically,it has been found that the critical accretion phenomena is possible for different values of parameters.The results for the Schwarzschild black hole can be recovered in the limiting case.展开更多
We find exact solutions to the Klein-Gordon equation in the vicinity of Schwarzschild black holes.For particles with a zero angular momentum,the convergence range of the solution is r < 4M.One of the solutions desc...We find exact solutions to the Klein-Gordon equation in the vicinity of Schwarzschild black holes.For particles with a zero angular momentum,the convergence range of the solution is r < 4M.One of the solutions describes an exponential enhancement of the density of particles in the vicinity of Schwarzschild black holes,which might be the mechanism of gamma-ray bursts.展开更多
The harmonic metric for Schwarzschild black hole with a uniform velocity is presented. In the limit of weak field and low velocity, this metric reduces to the post-Newtonian approximation for one moving point mass. As...The harmonic metric for Schwarzschild black hole with a uniform velocity is presented. In the limit of weak field and low velocity, this metric reduces to the post-Newtonian approximation for one moving point mass. As an application, we derive the dynamics of particle and photon in the weak-field limit for the moving Schwarzschild black hole with an arbitrary velocity. It is found that the relativistic motion of gravitational source can induce an additional centripetal force on the test particle, which may be comparable to or even larger than the conventional Newtonian gravitational force.展开更多
文摘In this paper,we apply the tunneling of massive particle through the quantum horizon of a Schwarzschildblack hole in noncommutative spacetime.The tunneling effects lead to modified Hawking radiation due to inclusionof back-reaction effects.Our calculations show also that noncommutativity effects cause the further modifications tothe thermodynamical relations in black hole.We calculate the emission rate of the massive particles' tunneling from aSchwarzschild black hole which is modified on account of noncommutativity influences.The issues of information lossand possible correlations between emitted particles are discussed.Unfortunately even by considering noncommutativityview point,there is no correlation between different modes of evaporation at least at late-time.Nevertheless,as a resultof spacetime noncommutativity,information may be conserved by a stable black hole remnant.
基金Supported by the National Natural Science Foundation of China under Grant No.10275030Cuiying Project of Lanzhou University under Grant No.225000-582404
基金Supported by the National Natural Science Foundation of China under Grant No 10873004, and the State Key Development Program for Basic Research Program of China under Grant No 2010CB832803.
文摘In this Letter,we examine the phantom energy accretion onto a Kehagias-Sfetsos black hole in Horava-Lifshitz gravity.To discuss the accretion process onto the black hole,the equations of phantom flow near the black hole have been derived.It is found that mass of the black hole decreases because of phantom accretion.We discuss the conditions for critical accretion.Graphically,it has been found that the critical accretion phenomena is possible for different values of parameters.The results for the Schwarzschild black hole can be recovered in the limiting case.
基金supported by the National Natural Science Foundation of China (Grant No. 11073007)
文摘We find exact solutions to the Klein-Gordon equation in the vicinity of Schwarzschild black holes.For particles with a zero angular momentum,the convergence range of the solution is r < 4M.One of the solutions describes an exponential enhancement of the density of particles in the vicinity of Schwarzschild black holes,which might be the mechanism of gamma-ray bursts.
基金Supported by the Program for New Century Excellent Talents in University under Grant No.NCET-10-0702the National Basic Research Program of China(973 Program)under Grant No.2013CB328904the Ph.D.Programs Foundation of Ministry of Education of China under Grant No.20110184110016
文摘The harmonic metric for Schwarzschild black hole with a uniform velocity is presented. In the limit of weak field and low velocity, this metric reduces to the post-Newtonian approximation for one moving point mass. As an application, we derive the dynamics of particle and photon in the weak-field limit for the moving Schwarzschild black hole with an arbitrary velocity. It is found that the relativistic motion of gravitational source can induce an additional centripetal force on the test particle, which may be comparable to or even larger than the conventional Newtonian gravitational force.
