The inertia of heat and its role in the dynamics of dissipative collapse

TL;DR

This paper explores how the inertial mass density decreases in dissipative fluids due to the inertial term in the transport equation, affecting gravitational forces and potentially impacting astrophysical models.

Contribution

It demonstrates that the inertial term in the transport equation reduces both inertial mass density and gravitational force in dissipative fluids, linking transport dynamics with gravitational effects.

Findings

Inertial mass density decreases due to the inertial term.

Effective gravitational force is diminished by the same factor.

Implications for astrophysical scenarios are discussed.

Abstract

The decreasing of the inertial mass density, established in the past for dissipative fluids, is found to be produced by the ``inertial'' term of the transport equation. Once the transport equation is coupled to the dynamical equation one finds that the contribution of the inertial term diminishes the effective inertial mass and the ``gravitational'' force term, by the same factor. An intuitive picture, and prospective applications of this result to astrophysical scenarios are discussed.