Results 101 to 110 of about 2,296,811 (218)

Fundamental physics opportunities with the next-generation Event Horizon Telescope

Living Reviews in Relativity
The Event Horizon Telescope (EHT) Collaboration recently published the first images of the supermassive black holes in the cores of the Messier 87 and Milky Way galaxies.
Dimitry Ayzenberg, Lindy Blackburn, Richard Brito, Silke Britzen, Avery E. Broderick, Raúl Carballo-Rubio, Vitor Cardoso, Andrew Chael, Koushik Chatterjee, Yifan Chen, Pedro V. P. Cunha, Hooman Davoudiasl, Peter B. Denton, Sheperd S. Doeleman, Astrid Eichhorn, Marshall Eubanks, Yun Fang, Arianna Foschi, Christian M. Fromm, Peter Galison, Sushant G. Ghosh, Roman Gold, Leonid I. Gurvits, Shahar Hadar, Aaron Held, Janice Houston, Yichao Hu, Michael D. Johnson, Prashant Kocherlakota, Priyamvada Natarajan, Héctor Olivares, Daniel Palumbo, Dominic W. Pesce, Surjeet Rajendran, Rittick Roy, Saurabh, Lijing Shao, Shammi Tahura, Aditya Tamar, Paul Tiede, Frédéric H. Vincent, Luca Visinelli, Zhiren Wang, Maciek Wielgus, Xiao Xue, Kadri Yakut, Huan Yang, Ziri Younsi   +47 more
doaj   +1 more source

Dark matter annihilation via Breit-Wigner enhancement with heavier mediator

Physics Letters B
We propose a new scenario that both the dark matter freeze-out in the early Universe and its possible annihilation for indirect detection around a supermassive black hole are enhanced by a Breit-Wigner resonance.
Yu Cheng, Shao-Feng Ge, Jie Sheng, Tsutomu T. Yanagida   +3 more
doaj   +1 more source

Enhancing the rate of tidal disruptions of stars by a self-gravitating disc around a massive central black hole

EPJ Web of Conferences, 2012
We further study the idea that a self-gravitating accretion disc around a supermassive black hole can increase the rate of gradual orbital decay of stellar trajectories (and hence tidal disruption events) by setting some stars on eccentric trajectories ...
Šubr L., Karas V.
doaj   +1 more source

Strong deflection gravitational lensing by a modified Hayward black hole

European Physical Journal C: Particles and Fields, 2017
A modified Hayward black hole is a nonsingular black hole. It is proposed that it would form when the pressure generated by quantum gravity can stop matter’s collapse as the matter reaches the Planck density.
Shan-Shan Zhao, Yi Xie
doaj   +1 more source

Supermassive Black Holes

, 2007
26 pages, 15 figures, to appear in "Kerr Spacetime: Rotating Black Holes in General Relativity" eds. D.L. Wiltshire, M. Visser and S.M. Scott, (Cambridge Univ. Press)
openaire   +2 more sources

Joint Formation of Supermassive Black Holes and Galaxies [PDF]

, 2018
The tight correlation between black hole mass and velocity dispersion of galactic bulges is strong evidence that the formation of galaxies and supermassive black holes are closely linked. I review the modeling of the joint formation of galaxies and their

core   +2 more sources

Relativistic Aspects of Accreting Supermassive Black Hole Binaries in Their Natural Habitat: A Review

Galaxies, 2019
In this review a summary is given on recent theoretical work, on understanding accreting supermassive black hole binaries in the gravitational wave (GW)-driven regime. A particular focus is given to theoretical predictions of properties of disks and jets
Roman Gold
doaj   +1 more source

Braneworld black holes [PDF]

, 2006
The braneworld paradigm provides an interesting framework within which to explore the possibility that our Universe lives in a fundamentally higher dimensional space- time.
Whisker, Richard
core  

Cold, clumpy accretion onto an active supermassive black hole [PDF]

, 2015
Supermassive black holes in galaxy centres can grow by the accretion of gas, liberating energy that might regulate star formation on galaxy-wide scales.
Oonk, J.B. Raymond, Oonk, J. B. Raymond, G. Mark Voit, Urry, C. Megan, Donahue, Megan, J. B. Raymond Oonk, Alastair C. Edge, Yuan Li, Anaëlle Maury, Stefi A. Baum, Timothy A. Davis, Jeremy S. Sanders, Tracy E. Clarke, Maury, Ana�lle, McNamara, Brian R., Brian R. McNamara, Malcolm N. Bremer, Voit, G. Mark, Wise, Michael W., Megan Donahue, Quillen, Alice C., Louise O. V. Edwards, Helen R. Russell, O'Dea, Christopher P., Davis, Timothy A., Edwards, Louise O.V., Grant R. Tremblay, Combes, Fran�oise, McDonald, Michael A., Alice C. Quillen, Christopher, Philippe, Stephen Hamer, Salom�, Philippe, Christopher P. O’Dea, Sanders, Jeremy S., Andrew C. Fabian, Russell, Helen R., Françoise Combes, Wise, Michael, Hamer, Stephen L., Fabian, Andrew C., Salomé, Philippe, Edwards, Louise O. V., C. Megan Urry, Michael W. Wise, Galván-Madrid, Roberto, Bremer, Malcolm N, Combes, Françoise, Hamer, Stephen, O’Dea, P., O�Dea, Christopher P., Li, Yuan, Michael A. McDonald, Roberto Galván-Madrid, Philippe Salomé, Bremer, Malcolm N., Galv�n-Madrid, Roberto, Clarke, Tracy E., Edge, Alastair C., Baum, Stefi A., Maury, Anaëlle, Tremblay, Grant R., Combes, F., Davis, T., Clarke, T., Li, Y., O’Dea, C., Urry, C., Hamer, S., Oonk, J., Donahue, M., Galván-Madrid, R., McDonald, M., Maury, A., Bremer, M., Russell, H., Sanders, J., McNamara, B., Tremblay, G., Quillen, A., Edge, A., Fabian, A., Baum, S., Voit, G., Edwards, L., Salomé, P., Wise, M., Hamer, Stephen L.; id_orcid   +87 more
core   +1 more source

Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole

Advances in High Energy Physics, 2015
We study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both cases.
M. Sharif, Sehrish Iftikhar
doaj   +1 more source