The Cherenkov Telescope Array Will Test Whether Pulsars Generate the Galactic Center Gamma-Ray Excess

Autor:	Keith, Celeste, Hooper, Dan, Linden, Tim
Rok vydání:	2022
Předmět:	Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.107.103001
Popis:	The GeV-scale gamma-ray excess observed from the region surrounding the Galactic Center has been interpreted as either the products of annihilating dark matter particles, or as the emission from a large population of faint and centrally-located millisecond pulsars. If pulsars are responsible for this signal, they should also produce detectable levels of TeV-scale emission. In this study, we employ a template-based analysis of simulated data in an effort to assess the ability of the Cherenkov Telescope Array (CTA) to detect or constrain the presence of this emission, providing a new and powerful means of testing whether millisecond pulsars are responsible for the observed excess. We find that after even a relatively brief observation of the Inner Galaxy, CTA will be able to definitively detect this TeV-scale emission, or rule out pulsars as the source of the Galactic Center Gamma-Ray Excess. Comment: 12 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2212.08080 Zobrazit plný text záznamu View this record from Arxiv