Gamma rays from Galactic pulsars
Francesca Calore, Mattia Di Mauro, and Fiorenza Donato
TL;DR
This paper assesses the contribution of Galactic pulsars to the diffuse gamma-ray background, finding that undetected pulsars account for only a small fraction of the isotropic gamma-ray emission observed by Fermi LAT.
Contribution
It provides a new estimate of the gamma-ray contribution from undetected pulsars using multiwavelength data, showing their limited role in the diffuse background.
Findings
Undetected pulsars contribute minimally to the isotropic gamma-ray background.
Radio to gamma-ray data helps constrain pulsar contributions.
Most of the diffuse gamma-ray emission remains unexplained by pulsars.
Abstract
Gamma rays from young pulsars and milli-second pulsars are expected to contribute to the diffuse gamma-ray emission measured by the {\it Fermi} Large Area Telescope (LAT) at high latitudes. We derive the contribution of the pulsars undetected counterpart by using information from radio to gamma rays and we show that they explain only a small fraction of the isotropic diffuse gamma-ray background.
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Taxonomy
TopicsPulsars and Gravitational Waves Research · Astrophysics and Cosmic Phenomena · Gamma-ray bursts and supernovae