Implications of Intermediate Mass Black Hole in globular cluster G1 on Dark Matter detection

TL;DR

This paper investigates how an intermediate mass black hole in globular cluster G1 could enhance dark matter density and produce detectable gamma-ray signals from dark matter annihilation, with potential observability by current gamma-ray detectors.

Contribution

It demonstrates that a dark matter density spike caused by the black hole could lead to observable gamma-ray signals, linking black hole presence to dark matter detection.

Findings

Dark matter spike could produce observable gamma-ray signals.

Gamma-ray signals may be detectable by GLAST and ACT detectors.

Survival of the density spike is crucial for detection prospects.

Abstract

Recently there has been a growing evidence in favor of the presence of an Intermediate Mass Black Hole in the globular cluster G1, in Andromeda Galaxy. In this paper, we explore whether the adiabatic growth in the dark matter density due to the presence of a black hole could result in an observable gamma ray signal due to dark matter annihilation in this globular cluster. Starting from an initial NFW matter profile, with density parameters consistent with G1 observations, we find that indeed, if the spike in the density has been formed and has survived till present, the signal could be observed by GLAST and current ACT detectors.