55 citations · 158 across the 6 of their papers we have counts for
6 papers
Black holes in nonlinear electrodynamics: quasi-normal spectra and parity splitting
Eliana Chaverra, Juan Carlos Degollado, Claudia Moreno +1
We discuss the quasi-normal oscillations of black holes which are sourced by a nonlinear electrodynamic field. While previous studies have focused on the computation of quasi-norma…
Michel accretion of a polytropic fluid with adiabatic index gamma > 5/3: Global flows versus homoclinic orbits
Eliana Chaverra, Patryk Mach, Olivier Sarbach
We analyze the properties of a polytropic fluid which is radially accreted into a Schwarzschild black hole. The case where the adiabatic index gamma lies in the range 1 < gamma <=…
Quasi-normal acoustic oscillations in the transonic Bondi flow
Eliana Chaverra, Olivier Sarbach
In recent work, we analyzed the dynamics of spherical and nonspherical acoustic perturbations of the Michel flow, describing the steady radial accretion of a relativistic perfect f…
Radial accretion flows on static spherically symmetric black holes
Eliana Chaverra, Olivier Sarbach
We analyze the steady radial accretion of matter into a nonrotating black hole. Neglecting the self-gravity of the accreting matter, we consider a rather general class of static, s…
Quasi-normal acoustic oscillations in the Michel flow
Eliana Chaverra, Manuel D. Morales, Olivier Sarbach
We study spherical and nonspherical linear acoustic perturbations of the Michel flow, which describes the steady radial accretion of a perfect fluid into a nonrotating black hole.…
Linear perturbations of self-gravitating spherically symmetric configurations
Eliana Chaverra, Néstor Ortiz, Olivier Sarbach
We present a new covariant, gauge-invariant formalism describing linear metric perturbation fields on any spherically symmetric background in general relativity. The advantage of t…