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arXiv · 2605.17636

Diffuse gamma-ray emission in the vicinity of open cluster Berkeley 87

Ziwei Ou·Xiaolong Yang
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Abstract

We report the detection of diffuse gamma-ray emission toward the young massive star cluster Berkeley 87 using Fermi data. The emission has an angular extension of 0.36 degree and a photon index of 2.68. The hadronic scenario is favored given the dense gas and the cluster's strong stellar winds.

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Ziwei Ou, Xiaolong Yang. 2026-05-17. Diffuse gamma-ray emission in the vicinity of open cluster Berkeley 87. https://arxiv.org/abs/2605.17636

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