Results 51 to 60 of about 140,146 (178)

Nonthermal Synchrotron Emission and Polarization Signatures during Black Hole Flux Eruptions

The Astrophysical Journal
In this work, we investigate synchrotron emission and the observational signatures of anisotropic nonthermal electrons during magnetic flux eruptions in a magnetically arrested disk, using 3D GRMHD simulations.
Fan Zhou, Jiewei Huang, Yuehang Li, Zhenyu Zhang, Yehui Hou, Minyong Guo, Bin Chen   +6 more
doaj   +1 more source

Pre-DECIGO can get the smoking gun to decide the astrophysical or cosmological origin of GW150914-like binary black holes [PDF]

, 2016
Pre-DECIGO consists of three spacecraft arranged in an equilateral triangle with 100km arm lengths orbiting 2000km above the surface of the earth. It is hoped that the launch date will be in the late 2020s.
Takashi Nakamura, M. Ando, T. Kinugawa, H. Nakano, K. Eda, S. Sato, M. Musha, T. Akutsu, Takahiro Tanaka, N. Seto, N. Kanda, Y. Itoh   +11 more
semanticscholar   +1 more source

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, EarlyView.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 more
wiley   +1 more source

Further Evidence for a Direct-collapse Origin of the Supermassive Black Hole at the Center of the ∞ Galaxy

The Astrophysical Journal Letters
The z = 1.14 ∞ galaxy consists of two ringed nuclei with an active supermassive black hole (SMBH) in between them. The system is likely the result of a nearly face-on collision between two disk galaxies with massive bulges. In P. van Dokkum et al.
Pieter van Dokkum, Gabriel Brammer, Connor Jennings, Imad Pasha, Josephine F. W. Baggen   +4 more
doaj   +1 more source

Shadow of rotating and twisting charged black holes with cloud of strings and quintessence

The European Physical Journal C, 2023
Testing gravity theories is an important and interesting issue in relativistic astrophysics using astrophysical observations. In recent years, Event horizon telescope collaboration provided valuable data from shadow of supermassive black holes located at
M. Zahid, J. Rayimbaev, Furkat Sarikulov, S. Khan, Jingli Ren   +4 more
semanticscholar   +1 more source

Aharonov–Bohm Effect for Cooper Pairs in Kerr Spacetime: Gravitomagnetic Phase Shifts From Frame Dragging

Annalen der Physik, Volume 538, Issue 8, August 2026.
ABSTRACT The unification of quantum mechanics and general relativity remains a central problem in fundamental physics. Here, we study the gravitomagnetic Aharonov–Bohm (AB) effect for Cooper pairs in Kerr spacetime. Frame‐dragging by a rotating black hole (BH) generates an effective vector potential through the off‐diagonal metric term gtϕ$g_{t\phi }$,
Erdem Sucu, İzzet Sakallı
wiley   +1 more source

The High Energy X-ray Probe (HEX-P): probing accretion onto stellar mass black holes

Frontiers in Astronomy and Space Sciences
Accretion is a universal astrophysical process that plays a key role in cosmic history, from the epoch of reionization to galaxy and stellar formation and evolution. Accreting stellar-mass black holes in X-ray binaries are one of the best laboratories to
Riley M. T. Connors, John A. Tomsick, Paul Draghis, Benjamin Coughenour, Aarran W. Shaw, Javier A. García, Javier A. García, Dominic Walton, Kristin Madsen, Daniel Stern, Nicole Cavero Rodriguez, Thomas Dauser, Melania Del Santo, Jiachen Jiang, Henric Krawczynski, Honghui Liu, Joseph Neilsen, Michael Nowak, Sean Pike, Andrea Santangelo, Navin Sridhar, Navin Sridhar, Navin Sridhar, Andrew West, Jörn Wilms   +24 more
doaj   +1 more source

Approaching the Black Hole by Numerical Simulations

Universe, 2019
Black holes represent extreme conditions of physical laws. Predicted about a century ago, they are now accepted as astrophysical reality by most of the scientific community.
Christian Fendt
doaj   +1 more source

Optical appearance of black holes surrounded by a dark matter halo [PDF]

Journal of Cosmology and Astroparticle Physics
Black holes in General Relativity are described by space-time metrics that are simpler in comparison to non-vacuum compact objects. However, given the universality of the gravitational pull, it is expected that dark matter accumulates around ...
C. F. Macedo, J. L. Rosa, D. Rubiera-García   +2 more
semanticscholar   +1 more source

Perturbative Analytical Construction of Bowen–York Initial Data for Binary Black Holes up to Third Order in Spin and Linear Momentum

Fortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT We analytically construct initial data for binary black hole systems by solving the Einstein constraint equations within the Bowen–York framework. Allowing for arbitrarily oriented linear momenta and spins, we obtain a perturbative solution of the vacuum Hamiltonian constraint up to third order in the source parameters. Our solution explicitly
Leyla Ogurol, Tore Boybeyi, Bayram Tekin
wiley   +1 more source