Gravitational collapse without a remnant

TL;DR

This paper studies a unique gravitational collapse where the star emits all its energy, resulting in no remnant and leaving behind a flat Minkowski spacetime, contrasting with typical collapse outcomes.

Contribution

It introduces a model of gravitational collapse with complete energy emission, leading to a flat spacetime, which is a novel scenario compared to traditional collapse models.

Findings

Star's energy is entirely emitted during collapse

Remaining spacetime is Minkowski (flat) after collapse

Collapse process differs from typical black hole formation

Abstract

We investigate the gravitational collapse of a spherically symmetric, inhomogeneous star, which is described by a perfect fluid with heat flow and satisfies the equation of state $p=\rho/3$ or $p=C\rho^\ga$ at its center. Different from the ordinary process of gravitational collapsing, the energy of the whole star is emitted into space. And the remaining spacetime is a Minkowski one at the end of the process.