Results 91 to 100 of about 51,175 (198)

Schwarzschild-anti de Sitter within an Isothermal Cavity: Thermodynamics, Phase Transitions and the Dirichlet Problem

, 2004
The thermodynamics of Schwarzschild black holes within an isothermal cavity and the associated Euclidean Dirichlet boundary-value problem are studied for four and higher dimensions in anti-de Sitter (AdS) space.
E. Witten, E. Witten, J. M. Maldacena, M. Abramowitz, M. M. Akbar, S. Barnard   +5 more
core   +1 more source

Astrometric Image Centroid Displacements due to Gravitational Microlensing by the Ellis Wormhole

, 2011
Continuing work initiated in an earlier publication (Abe, ApJ, 725 (2010) 787), we study the gravitational microlensing effects of the Ellis wormhole in the weak-field limit.
Abe, Alcock, Alcock, Alcock, Asada, Bennett, Bond, Das, Fumio Abe, Gould, Hideki Asada, Jeong, Lobo, Poindexter, Rahaman, Refsdal, Safizadeh, Takao Kitamura, Udalski, van der Waerden, Visser, Yukiharu Toki   +21 more
core   +1 more source

Emergent Spacetime and Entanglement. Quantum Mechanical Derivation of the Schwarzschild Radius

Journal of Innovative Research in Mathematical and Computational Sciences
We develop a relational extension of special relativity in which temporal structure is represented by a two-dimensional phase variable and the kinematics of free particles correspond to motion of fixed magnitude in this time phase plane. Spatial and temporal notions arise only through comparisons between physical systems, and the resulting “completed ...
Rodrigo Steinvorth, Syed Ali Mardan Azmi
openaire   +1 more source

Thermodynamic fluctuations and radiation properties around Schwarzschild black holes immersed in Hernquist dark matter halo

European Physical Journal C: Particles and Fields
This study investigates the dynamics of circular motion and radiative properties of particles orbiting Schwarzschild black holes embedded in a Hernquist dark matter halo.
Shokhzod Jumaniyozov
doaj   +1 more source

Black hole in the Dekel-Zhao dark matter profile

Physics Letters B
Motivated by the work of Cardoso et al. (2022) [15] on black holes in galaxies, we derive a new black hole solution surrounded by a Dekel-Zhao (DZ) dark matter profile.
Ali Övgün, Reggie C. Pantig
doaj   +1 more source

Are Massive Elementary Particles Black Holes?

, 2003
We use exact results in a new approach to quantum gravity to study the effect of quantum loop corrections on the behavior of the metric of space-time near the Schwarzschild radius of a massive point particle in the Standard Model.
't Hooft G., Adler R., B. F. L. WARD, Bardin D., Feynman R. P., Feynman R. P., Green M., Misner C., Weinberg S.   +8 more
core   +3 more sources

TRANSFER PANAS LUBANG HITAM SCHWARZSCHILD

Jurnal MIPA, 2015
Mekanika kuantum menunjukkan bahwa lubang hitam memiliki temperatur sebagai indikasi dapat mengemisikan partikel. Persamaan transfer panas secara general mengandung operator Laplacian yang sifatnya dipengaruhi oleh ruang.
Y Tiandho, Triyanta -
doaj  

Impact of dark matter halo on black hole: Thermodynamical properties and photons motion

Nuclear Physics B
This paper investigates the thermodynamic properties of a Schwarzschild black hole (BH) surrounded by a dark matter (DM) halo, modeled using a Dehnen-type density profile.
Abdelhakim Benkrane, Djamel Eddine Zenkhri   +1 more
doaj   +1 more source

Testing extended theories of gravity via black hole photon rings

European Physical Journal C: Particles and Fields
As a unique observational feature in strong gravitational fields, photon rings around black holes provide a method to evaluate general relativity and alternative gravity theories.
Qiao Yue, Zhaoyi Xu, Meirong Tang
doaj   +1 more source

Probing Einstein–Maxwell-scalar black hole via thin accretion disks and shadows with EHT observations of M87* and Sgr A*

European Physical Journal C: Particles and Fields
We investigated the shadows and thin accretion disks of Einstein–Maxwell-Scalar (EMS) black hole. Firstly, we investigated the influence of EMS parameters on the black hole shadow using the null geodesic method and constrained these parameters based on ...
Yingdong Wu, Ziqiang Cai, Zhenglong Ban, Haiyuan Feng, Wei-Qiang Chen   +4 more
doaj   +1 more source