scholarly journals Energy, Momentum and Angular Momentum of Gravitational Waves Induced by a Particle Plunging into a Schwarzschild Black Hole

1983 ◽  
Vol 70 (3) ◽  
pp. 757-771 ◽  
Author(s):  
K.-i. Oohara ◽  
T. Nakamura
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Gravitational Waves ◽  
Schwarzschild Black Hole

Polar trajectories around a black hole in a magnetic field

1989 ◽  
Vol 67 (10) ◽  
pp. 971-973
Author(s):  
K. D. Krori ◽  
J. C. Sarmah
Keyword(s):  
Magnetic Field ◽  
Black Hole ◽  
Angular Momentum ◽  
Test Particle ◽  
Field Parameter ◽  
Schwarzschild Black Hole ◽  
Magnetic Field Parameter ◽  
Neutral Test ◽  
Test Particles ◽  
The Magnetic Field

In this paper, we present a study of the stable polar trajectories ([Formula: see text] = constant plane) of neutral test particles around a Schwarzschild black hole embedded in a magnetic field. We also show how the nature of these trajectories changes with the variation in the angular momentum of the test particle and the magnetic field parameter.

scholarly journals Transonic structure of slowly rotating accretion flows with shocks around black holes

2016 ◽  
Vol 12 (S324) ◽  
pp. 23-26
Author(s):  
Petra Suková ◽  
Szymon Charzyński ◽  
Agnieszka Janiuk
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Angular Momentum ◽  
Time Scale ◽  
Mass Scale ◽  
Schwarzschild Black Hole ◽  
Transonic Flows ◽  
Accretion Flows ◽  
2D Structure ◽  
Sgr A

AbstractWe present recent results of the studies of low angular momentum accretion of matter onto Schwarzschild black hole using fully relativistic numerical simulations. We compare the resulting 2D structure of transonic flows with results of 1D pseudo-Newtonian computations of non-magnetized flow. The research has observable consequences on black holes on the whole mass scale, in particular it is related to the time-scale and shape of luminosity flares in Sgr A* or to the evolution of QPO frequency during outbursts of microquasars.

scholarly journals Signatures of the sources in the gravitational waves of a perturbed Schwarzschild black hole

2009 ◽  
Vol 42 (5) ◽  
pp. 1287-1310 ◽  
Author(s):  
Juan Carlos Degollado ◽  
Darío Núñez ◽  
Carlos Palenzuela
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Schwarzschild Black Hole

scholarly journals Simulating angular momentum of gravitational field of a rotating black hole and spin momentum of gravitational waves

2021 ◽  
pp. 7-20
Author(s):  
Yoshio Matsuki ◽  
Petro Bidyuk
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Gravitational Field ◽  
Gravitational Waves ◽  
Flat Surface ◽  
Curved Surface ◽  
Polar Coordinates ◽  
Rotating Black Hole ◽  
Quantum Particles ◽  
Spin Momentum

In this research, we simulated the angular momentum of gravitational field of a rotating black hole and the spin momentum of gravitational waves emitted from the black hole. At first, we calculated energy densities of the rotating gravitational field and spinning gravitational waves as the vectors, which were projected on the spherical curved surface of the gravitational field and of the gravitational waves. Then we calculated the angular momentum and the spin momentum as the vectors perpendicular to the curved surface. The earlier research by Paul Dirac, published in 1964, did not select the curved surface to calculate the motion of quantum particles; but, instead, he chose the flat surface to develop the theory of quantum mechanics. However, we pursued the simulation of the gravitational waves in spherical polar coordinates that form the spherical curved surface of the gravitational waves. As a result, we found that a set of anti-symmetric vectors described the vectors that were perpendicular to the spherical curved surface, and with these vectors we simulated the angular momentum of the rotating black hole’s gravitational field and the spin momentum of gravitational waves. The obtained results describe the characteristics of the rotation of a black hole and of spinning gravitational waves.

scholarly journals GW200115: A Nonspinning Black Hole–Neutron Star Merger

2021 ◽  
Vol 922 (1) ◽  
pp. L14
Author(s):  
Ilya Mandel ◽  
Rory J. E. Smith
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Neutron Star ◽  
Gravitational Waves ◽  
Orbital Angular Momentum ◽  
A Priori ◽  
Natural Consequence ◽  
Black Hole Spin ◽  
Large Black Hole ◽  
Star Binary

Abstract GW200115 was the second merger of a black hole and a neutron star confidently detected through gravitational waves. Inference on the signal allows for a large black hole spin misaligned with the orbital angular momentum, but shows little support for aligned spin values. We show that this is a natural consequence of measuring the parameters of a black hole–neutron star binary with nonspinning components while assuming the priors used in the LIGO–Virgo–KAGRA analysis. We suggest that, a priori, a nonspinning binary is more consistent with current astrophysical understanding.

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