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Recent calculations of gravitational radiation recoil generated during black-hole binary mergers have reopened the possibility that a merged binary can be ejected even from the nucleus of a massive host galaxy. Here we report the first…

General Relativity and Quantum Cosmology · Physics 2010-04-06 Manuela Campanelli , Carlos O. Lousto , Yosef Zlochower , David Merritt

We explore an interesting connection between black hole shadow parameters and the acceleration bounds for radial linear uniformly accelerated (LUA) trajectories in static spherically symmetric black hole spacetime geometries of the…

General Relativity and Quantum Cosmology · Physics 2024-10-29 Kajol Paithankar , Sanved Kolekar

In this paper, we have obtained modified black hole temperatures in rainbow gravity by employing both the modified dispersion relation (MDR) and the three different types of generalized uncertainty principles (GUPs) including the extended…

General Physics · Physics 2017-09-25 Yong-Wan Kim , Seung Kook Kim , Young-Jai Park

We derive here the expression for the accretion luminosity, $L(\infty)$, as seen by a distant inertial observer $S_\infty$, for the case of spherical accretion onto a static compact object having a surface gravitational red-shift $z_x$. It…

Astrophysics · Physics 2007-05-23 Abhas Mitra

A mechanism for proton acceleration to ~10^21eV is suggested. It may operate in accretion flows onto thin dark matter filaments of cosmic structure formation. The flow compresses the ambient magnetic field to strongly increase and align it…

High Energy Astrophysical Phenomena · Physics 2016-10-11 Mikhail Malkov , Roald Sagdeev , Patrick Diamond

There is a maximum for the gravity of a black hole in the vertical direction in the accretion disc. Outflows may probably be driven from the disc if the radiation flux of the disc is greater than a critical value corresponding to the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Xinwu Cao , Wei-Min Gu

In this paper, we will generalize the Gauss-Bonnet gravity to an energy dependent Gauss-Bonnet theory of gravity, which we shall call as the Gauss-Bonnet gravity's rainbow. We will also couple this theory to a Maxwell's theory. We will…

General Relativity and Quantum Cosmology · Physics 2015-08-26 Seyed Hossein Hendi , Mir Faizal

Recently we have presented a new physical model that links the maximum speed of light with the minimal Planck scale into a maximal-acceleration Relativity principle in phase spaces . The maximal proper-acceleration bound is $a = c^2/…

High Energy Physics - Theory · Physics 2007-05-23 Carlos Castro

Under the assumption that fast radio bursts (FRBs) are from coherent curvature emission powered by the dissipation of magnetic energy in the magnetosphere of neutron stars, we predict a maximum isotropic equivalent luminosity of (~2x10^{47}…

High Energy Astrophysical Phenomena · Physics 2018-11-07 Wenbin Lu , Pawan Kumar

We obtain exact Bardeen black holes to the regularized $4D$ Einstein--Gauss--Bonnet (EGB) gravity minimally coupled with the nonlinear electrodynamics (NED). In turn, we analyze the horizon structure to determine the effect of GB parameter…

General Relativity and Quantum Cosmology · Physics 2022-04-19 Arun Kumar , Rahul Kumar Walia , Sushant G. Ghosh

In this paper, with considering the nonlinear electromagnetic field coupled to Einstein gravity, we obtain the higher dimensional slowly rotating charged black hole solutions. By use of the fact that the temperature of the extreme black…

High Energy Physics - Theory · Physics 2010-11-15 S. H. Hendi

We obtain a (5+1)-dimensional global flat embedding of modified Schwarzschild black hole in rainbow gravity. We show that local free-fall temperature in rainbow gravity, which depends on different energy $\omega$ of a test particle, is…

General Relativity and Quantum Cosmology · Physics 2016-06-06 Yong-Wan Kim , Young-Jai Park

It has been predicted that an accelerating electron performs a Brownian motion in the inertial frame. This Brownian motion in the inertial frame has its roots in the interaction with the thermal excitation given by the Unruh effect in the…

High Energy Physics - Theory · Physics 2015-10-13 Shingo Takeuchi

Recent gravitational wave observations allow us to probe gravity in the strong and dynamical field regime. In this paper, we focus on testing Einstein-dilaton Gauss-Bonnet gravity which is motivated by string theory. In particular, we use…

General Relativity and Quantum Cosmology · Physics 2023-08-03 Zhenwei Lyu , Nan Jiang , Kent Yagi

Up-to-now known characteristics of radio pulsars, such as mass limits, magnetic field intensity, rotational period, and maximum radiation are mainly of empirical nature. Applying the Expansive Nondecelerative Universe model (ENU) into the…

Astrophysics · Physics 2007-05-23 Miroslav Sukenik , Jozef Sima

In this letter, we analyze the modification to the thermodynamics of a Schwarzchild black hole and a Kerr black hole due to gravity's rainbow. The metric for these black holes will be made energy dependent. This will be done by using…

General Relativity and Quantum Cosmology · Physics 2022-12-02 Moh Vaseem Akram , Imtiyaz Ahmad Bhat , Anver Aziz

Recently, O.B.Zaslavskii considers the collision near the horizon of the extremal Kerr black hole that produces two particles and one of two particles has divergent conserved killing energy(the so called super Penrose process).…

General Relativity and Quantum Cosmology · Physics 2020-09-03 Shun Jiang

We consider particle acceleration in vacuum gaps in magnetospheres of black holes powered through Blandford-Znajek mechanism and embedded into radiatively-inefficient accretion flow (RIAF) environment. In such situation the gap height is…

High Energy Astrophysical Phenomena · Physics 2016-09-07 K. Ptitsyna , A. Neronov

In this paper, we extend Joule-Thomson expansion to the low-dimensional regime in rainbow gravity by considering the rainbow rotating BTZ metric in the (2+1)-dimensional spacetime. After the metric of the black hole is obtained, we get the…

General Relativity and Quantum Cosmology · Physics 2022-07-05 Siyuan Hui , Benrong Mu , Jun Tao

Penrose process on rotational energy extraction of the black hole (BH) in the original non-projectable Ho\v{r}ava-Lifshitz gravity is studied. The strong dependence of the extracted energy from the special range of parameters of the…

Solar and Stellar Astrophysics · Physics 2011-09-01 Ahmadjon Abdujabbarov , Bobomurat Ahmedov , Bahodir Ahmedov
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