The basic physics of the binary black hole merger GW150914 [PDF]
Annals of Physics, 2016 The first direct gravitational‐wave detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory on September 14, 2015. The GW150914 signal was strong enough to be apparent, without using any waveform model, in the filtered ...
The Ligo Scientific Collaboration +499 more
semanticscholar +2 more sources
Quantum vortex instability and black hole superradiance
Physical Review Research, 2022 Vortices and black holes set the scene for many interesting dynamical processes in physics. Here, we study the dynamical instability of quantized vortices and rotational superradiance around rotating black holes, illustrating in the process that the same
Sam Patrick +4 more
doaj +1 more source
Towards a non-singular paradigm of black hole physics [PDF]
Journal of Cosmology and Astroparticle PhysicsThe study of regular black holes and black hole mimickers as alternatives to standard black holes has recently gained significant attention, driven both by the need to extend general relativity to describe black hole interiors, and by recent advances in ...
Raúl Carballo-Rubio +20 more
semanticscholar +1 more source
Light ring images of double photon spheres in black hole and wormhole spacetimes [PDF]
Physical Review D, 2022 The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illuminated by an optically thin accretion disk whose emission is confined to the equatorial plane shows a distinctive central brightness depression (the shadow)
Merce Guerrero +3 more
semanticscholar +1 more source
The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A* [PDF]
Monthly notices of the Royal Astronomical Society, 2018 The accretion flow around the Galactic Center black hole Sagittarius A* (Sgr A*) is expected to have an electron temperature that is distinct from the ion temperature, due to weak Coulomb coupling in the low-density plasma.
A. Chael +4 more
semanticscholar +1 more source
Photon regions, shadow observables, and constraints from M87* of a charged rotating black hole [PDF]
Physical Review D, 2022 Inspired by the observations of supermassive black hole M87* in \emph{Event Horizon Telescope }(EHT) experiment, a remarkable surge in black hole physics is to use the black hole shadow's observables to distinguish general relativity (GR) and modified ...
Y. Meng, Xiao-Mei Kuang, Zi-Yu Tang
semanticscholar +1 more source
Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 In this paper, we discuss the effects of nonlinear electrodynamics (NED) on non-rotating black holes, parametrized by the field coupling parameter β and magnetic charge parameter P in detail.
Mert Okyay, A. Ovgun
semanticscholar +1 more source
Physics of Pair Producing Gaps in Black Hole Magnetospheres [PDF]
Astrophysical Journal, 2018 In some low-luminosity accreting supermassive black hole systems, the supply of plasma in the funnel region can be a problem. It is believed that a local region with an unscreened electric field can exist in the black hole magnetosphere, accelerating ...
Alexander Y. Chen, Yajie Yuan, Huan Yang
semanticscholar +1 more source
The Physics of Eccentric Binary Black Hole Mergers. A Numerical Relativity Perspective [PDF]
Physical Review D, 2019 Gravitational wave observations of eccentric binary black hole mergers will provide unequivocal evidence for the formation of these systems through dynamical assembly in dense stellar environments.
E. Huerta +11 more
semanticscholar +1 more source
Geometric approach to circular photon orbits and black hole shadows [PDF]
Physical Review D, 2022 Circular photon orbit and black hole shadow are significantly important issues in physics and astronomy, and a number of breakthroughs have been witnessed in recent years.
C. Qiao, M. Li
semanticscholar +1 more source