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Waveform models for the gravitational-wave memory effect: III. Phenomenological frequency-domain model for nonspinning binaries
Arwa Elhashash, David A. Nichols
We present a phenomenological frequency-domain model for the gravitational-wave (GW) memory signal from nonspinning binary-black-hole mergers on quasicircular orbits. We develop se…
Waveform models for the gravitational-wave memory effect: II. Time-domain and frequency-domain models for nonspinning binaries
Arwa Elhashash, David A. Nichols
The nonlinear gravitational-wave (GW) memory effect$\unicode{x2014}$a permanent shift in the GW strain that arises from nonlinear GW interactions in the wave zone$\unicode{x2014}$i…
Waveform models for the gravitational-wave memory effect: Extreme mass-ratio limit and final memory offset
Arwa Elhashash, David A. Nichols
The gravitational-wave (GW) memory effect is a strong-field relativistic phenomenon that is associated with a persistent change in the GW strain after the passage of a GW. The nonl…
Definitions of (super) angular momentum in asymptotically flat spacetimes: Properties and applications to compact-binary mergers
Arwa Elhashash, David A. Nichols
The symmetries of asymptotically flat spacetimes in general relativity are given by the Bondi-Metzner-Sachs (BMS) group, though there are proposed generalizations of its symmetry a…