Self-force and fluid resonances
arXiv:1512.00059 · doi:10.1088/0264-9381/33/8/085002
Abstract
The gravitational self-force acting on a particle orbiting a massive central body has thus far been computed for vacuum spacetimes involving a black hole. In this work we continue an ongoing effort to study the self-force in nonvacuum situations. We replace the black hole by a material body consisting of a perfect fluid, and determine the impact of the fluid's dynamics on the self-force and resulting orbital evolution. We show that as the particle inspirals toward the fluid body, its gravitational perturbations trigger a number of quasinormal modes of the fluid-gravity system, which produce resonant features in the conservative and dissipative components of the self-force. As a proof-of-principle, we demonstrate this phenomenon in a simplified framework in which gravity is mediated by a scalar potential satisfying a wave equation in Minkowski spacetime.
28 pages, 10 figures
References in corpus (29)
- The motion of point particles in curved spacetime
- Gravitational self force in extreme mass-ratio inspirals
- Over-spinning a black hole with a test body
- Into the lair: gravitational-wave signatures of dark matter
- Test bodies and naked singularities: is the self-force the cosmic censor?
- A Rigorous Derivation of Gravitational Self-force
- Astrophysical signatures of boson stars: quasinormal modes and inspiral resonances
- Second-order gravitational self-force
- Evolution of inspiral orbits around a Schwarzschild black hole
- The self-consistent gravitational self-force
- Second Order Gravitational Self-Force
- Overspinning a Kerr black hole: the effect of self-force
- Gravitational Self-Force Correction to the Innermost Stable Circular Equatorial Orbit of a Kerr Black Hole
- Self-force as a cosmic censor
- A practical, covariant puncture for second-order self-force calculations
- Nonlinear gravitational self-force. I. Field outside a small body
- Gravitational radiation reaction and second order perturbation theory
- Finding high-order analytic post-Newtonian parameters from a high-precision numerical self-force calculation
- Periastron Advance in Spinning Black Hole Binaries: Gravitational Self-Force from Numerical Relativity
- Comparison Between Self-Force and Post-Newtonian Dynamics: Beyond Circular Orbits
- Second-order perturbation theory: problems on large scales
- Nordstrom's scalar theory of gravity and the equivalence principle
- Singular perturbation techniques in the gravitational self-force problem
- Experimental mathematics meets gravitational self-force
- Dependence of Self-force on Central Object
- Gravitational self-force in scalar-tensor gravity
- Gravitational self-force in nonvacuum spacetimes
- Combined gravitational and electromagnetic self-force on charged particles in electrovac spacetimes
- Gravitational self-force in non-vacuum spacetimes: an effective field theory derivation