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Magnetic equilibria of relativistic axisymmetric stars: The impact of flow constants
Arthur G. Suvorov, Kostas Glampedakis
Symmetries and conservation laws associated with the ideal Einstein-Euler system, for stationary and axisymmetric stars, can be utilized to define a set of flow constants. These qu…
Gravitational radiation from a particle plunging into a Schwarzschild black hole: frequency-domain and semirelativistic analyses
Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis +1
We revisit the classic problem of gravitational wave emission by a test particle plunging into a Schwarzschild black hole both in the frequency-domain Regge-Wheeler-Zerilli formali…
Gravitational Wave Peeps from EMRIs and their Implication for LISA Signal Confusion Noise
Daniel J Oliver, Aaron D Johnson, Joel Berrier +2
Scattering events around the center of massive galaxies will occasionally toss a stellar-mass compact object into an orbit around the massive black hole at the center, beginning an…
Pitfalls in applying gravitomagnetism to galactic rotation curve modelling
Kostas Glampedakis, David Ian Jones
The flatness of galaxy rotation curves at large radii is generally considered to be a significant piece of evidence in support of the existence of dark matter. Several studies have…
Is a black hole shadow a reliable test of the no-hair theorem?
Kostas Glampedakis, George Pappas
Capturing the image of the shadow cast by the event horizon of an illuminated black hole is, at the most basic level, an experiment of extreme light deflection in a strongly curved…