Gauge-invariant and coordinate-independent perturbations of stellar collapse: The interior
Gauge-invariant and coordinate-independent perturbations of stellar collapse: The interior
Small non-spherical perturbations of a spherically symmetric but time-dependent background spacetime can be used to model situations of astrophysical interest, for example the production of gravitational waves in a supernova explosion. We allow for perfect fluid matter with an arbitrary equation of state p=p(rho,s), coupled to general relativity. Applying a …