Dark Branches of Immortal Stars at the Galactic Center

TL;DR

This paper proposes that dark matter annihilation influences stars near the galactic center, creating a detectable 'dark main sequence' in the HR diagram, which could reveal dark matter properties.

Contribution

It introduces the concept of a dark HR diagram with a stable dark main sequence, linking dark matter effects to observable stellar features.

Findings

Stars in the galactic center can have a dark main sequence.

Dark matter annihilation can make stars effectively immortal.

Upcoming telescopes may detect the dark main sequence.

Abstract

We show that stars in the inner parsec of the Milky Way can be significantly affected by dark matter annihilation, producing population-level effects that are visible in a Hertzsprung-Russell (HR) diagram. We establish the dark HR diagram, where stars lie on a new stable $\textit{dark main sequence}$ with similar luminosities, but lower temperatures, than the standard main sequence. The dark matter density in these stars continuously replenishes, granting these stars immortality and solving multiple stellar anomalies. Upcoming telescopes could detect the dark main sequence, offering a new dark matter discovery avenue.