Diffuse Ultra-High-Energy Gamma-Ray Emission From TeV Halos
High Energy Astrophysical Phenomena
2024-10-18 v2 Cosmology and Nongalactic Astrophysics
Astrophysics of Galaxies
High Energy Physics - Phenomenology
Abstract
The LHAASO Collaboration has recently reported a measurement of the diffuse gamma-ray emission from the Galactic Plane at energies between 10 TeV and 1 PeV. While this emission is brighter than that expected from cosmic-ray interactions in the interstellar medium alone, we show that the intensity, spectrum, and morphology of this excess are in good agreement with that predicted from the "TeV halos" which surround the Milky Way's pulsar population. These results support the conclusion that TeV halos dominate the ultra-high-energy sky, and that these objects convert of their total spindown power into very-high and ultra-high-energy photons.
Cite
@article{arxiv.2306.00051,
title = {Diffuse Ultra-High-Energy Gamma-Ray Emission From TeV Halos},
author = {Ariane Dekker and Ian Holst and Dan Hooper and Giovani Leone and Emily Simon and Huangyu Xiao},
journal= {arXiv preprint arXiv:2306.00051},
year = {2024}
}
Comments
7 pages, 3 figures, 1 appendix, v2: version published in PRD