Search of the Earth Limb Fermi Data and Non-Galactic Center Region Fermi Data for Signs of Narrow Lines

TL;DR

This paper analyzes Fermi LAT data from non-Galactic center regions and Earth limb observations to investigate the origin of narrow spectral lines previously reported near the Galactic center, testing dark matter hypotheses.

Contribution

It introduces a novel analysis using non-Galactic center and Earth limb data to scrutinize the dark matter interpretation of spectral lines.

Findings

No conclusive evidence for dark matter origin of lines

Provides constraints on dark matter models based on Fermi data

Enhances understanding of spectral line origins in gamma-ray data

Abstract

Since the spring of 2012 there have been many papers published using Fermi LAT public data that claim evidence for narrow spectral lines coming from the region of the Galactic center. This study uses non-Galactic center Fermi-LAT data from survey mode observations, and Earth limb Fermi data to test the dark matter interpretation of this feature and better understand its origins.