The Consistency of Fermi-LAT Observations of the Galactic Center with a Millisecond Pulsar Population in the Central Stellar Cluster

TL;DR

This paper demonstrates that the gamma-ray observations of the Galactic Center by Fermi-LAT align with emissions expected from a population of millisecond pulsars in the central stellar cluster, offering an alternative to dark matter explanations.

Contribution

It provides evidence supporting millisecond pulsars as a source of gamma rays in the Galactic Center, challenging the necessity of dark matter annihilation models.

Findings

Gamma-ray spectrum matches that of several globular clusters.

Spectrum and morphology are consistent with millisecond pulsar population.

Dark matter interpretation remains plausible but not exclusive.

Abstract

I show that the spectrum and morphology of a recent Fermi-LAT observation of the Galaxy center are consistent with a millisecond pulsar population in the nuclear Central stellar cluster of the Milky Way. The Galaxy Center gamma-ray spectrum is consistent with the spectrum of four of eight globular clusters that have been detected in the gamma-ray. A dark matter annihilation interpretation cannot be ruled out, though no unique features exist that would require this conclusion.