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In theoretical physics, a dynamical horizon (DH) is a local description of evolving black-hole horizons. In the literature there exist two different mathematical formulations of DHs—the 2+2 formulation developed first by Sean Hayward and the 3+1 formulation developed by Abhay Ashtekar and others. It provides a description of a black hole that is evolving. A related formalism, for black holes with zero influx, is an isolated horizon.
In theoretical physics, shape dynamics is a theory of gravity that implements Mach's principle, developed with the specific goal to obviate the problem of time and thereby open a new path toward the resolution of incompatibilities between general relativity and quantum mechanics.
Manuela Campanelli is a distinguished professor of astrophysics and mathematical sciences of the Rochester Institute of Technology, and the director of its Center for Computational Relativity and Gravitation and Astrophysics and Space Sciences Institute for Research Excellence. Her work focuses on the astrophysics of merging black holes and neutron stars, which are powerful sources of gravitational waves, electromagnetic radiation and relativistic jets. This research is central to the new field of multi-messenger astronomy.
References
- ↑ Wheeler, J. A. (January 1955). "Geons". Physical Review . 97 (2): 511–536. Bibcode:1955PhRv...97..511W. doi:10.1103/PhysRev.97.511.
- ↑ Brill, D. R.; Hartle, J. B. (1964). "Method of the Self-Consistent Field in General Relativity and its Application to the Gravitational Geon". Physical Review . 135 (1B): B271. Bibcode:1964PhRv..135..271B. doi:10.1103/PhysRev.135.B271.
- ↑ Anderson, Paul R.; Brill, Dieter R. (1997). "Gravitational Geons Revisited". Physical Review D . 56 (8): 4824–4833. arXiv: gr-qc/9610074 . Bibcode:1997PhRvD..56.4824A. doi:10.1103/PhysRevD.56.4824. S2CID 119372143..
- ↑ Perry, G. P.; Cooperstock, F. I. (1999). "Stability of Gravitational and Electromagnetic Geons". Classical and Quantum Gravity . 16 (6): 1889–1916. arXiv: gr-qc/9810045 . Bibcode:1999CQGra..16.1889P. doi:10.1088/0264-9381/16/6/321. S2CID 18207509..
- ↑ Klimets, A.P. Philosophy Documentation Center, Western University-Canada, 2017, pp.13-23
- ↑ Guiot, B; Borquez, A.; Deur, A.; Werner, K. (2020). "Graviballs and Dark Matter". JHEP . 2020 (11): 159. arXiv: 2006.02534 . Bibcode:2020JHEP...11..159G. doi:10.1007/JHEP11(2020)159. S2CID 219303406..