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Diffuse Ultra-High-Energy Gamma-Ray Emission From TeV Halos

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arxiv 2306.00051 v2 pith:2C3RY63F submitted 2023-05-31 astro-ph.HE astro-ph.COastro-ph.GAhep-ph

Ariane Dekker , Ian Holst , Dan Hooper , Giovani Leone , Emily Simon , Huangyu Xiao This is my paper · ORCID
classification astro-ph.HEastro-ph.COastro-ph.GAhep-ph
keywords emissionhalosultra-high-energydiffusegamma-rayagreementalonebrighter
verification ladder T0 review T1 audit T2 compute T3 formal
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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 $\sim 5\%$ of their total spindown power into very-high and ultra-high-energy photons.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Contribution of Unresolved Sources to Diffuse Gamma-Ray Emission from the Galactic Plane

    astro-ph.HE 2025-01 conditional novelty 6.0 of 10

    Using the first LHAASO source catalog, the authors find that unresolved sources can account for the outer-Galaxy diffuse gamma-ray excess above the cosmic-ray model, but not the inner-Galaxy excess.

  2. Breaking Dark: Hunting Heavy Decaying Dark Matter with Tibet AS$_\gamma$ and LHAASO-KM2A

    hep-ph 2025-09 conditional novelty 5.0 of 10

    Tibet ASγ and LHAASO-KM2A diffuse gamma-ray data exclude decaying dark matter lifetimes below about 10^28 seconds for masses around 10^6-10^9 GeV, for many Standard Model final states.

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