2015/04/09 by Ryan M. O’Leary, Ryan M. O'Leary, O'Leary, Ryan M. +7 · 1 citation
Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Pulsars and Gravitational Waves Research #Scientific Research and Discoveries #astro-ph.GA #astro-ph.HE #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.1504.02477
Submitted to PRL
arxiv created 2015/04/09 · openalex publication_date 2015/04/09 · arxiv updated 2015/04/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Studies of Fermi data indicate an excess of GeV gamma rays around the Galactic center (GC), possibly due to dark matter. We show that young gamma-ray pulsars can yield a similar signal. First, a high concentration of GC supernovae naturally leads to a population of kicked pulsars symmetric about the GC. Second, while very-young pulsars with soft spectra reside near the Galactic plane, pulsars with spectra that have hardened with age accumulate at larger angles. This combination, including unresolved foreground pulsars, traces the morphology and spectrum of the Excess.