Some properties of convection in hybrid stars

TL;DR

This paper investigates how the unique thermodynamic properties of hybrid star matter can cause convection to behave differently, potentially affecting the stars' thermal evolution through a phenomenon called inverse convection.

Contribution

It reveals that two-phase coexistence in hybrid stars can alter convection conditions, introducing the possibility of inward-directed thermal flux.

Findings

Convection can be reversed in hybrid stars due to thermodynamic properties.

Inverse convection may influence the thermal evolution of hybrid stars.

Conditions favoring inverse convection are discussed.

Abstract

It is shown that the unusual thermodynamic properties of matter within the region of two-phase coexistence in hybrid stars result in a change of the standard condition for beginning of convection. In particular, the thermal flux transported by convection may be directed towards the stellar center. We discuss favorable circumstances leading to such an effect of "inverse convection" and its possible influence on the thermal evolution of hybrid stars.