Diffuse gamma-ray emission in the vicinity of open cluster Berkeley 87
Ziwei Ou, Xiaolong Yang
TL;DR
This paper reports the detection of diffuse gamma-ray emission near Berkeley 87, suggesting a hadronic origin due to dense gas and stellar winds, with detailed analysis using Fermi data.
Contribution
First detection of diffuse gamma-ray emission associated with Berkeley 87, providing insights into particle acceleration in young star clusters.
Findings
Gamma-ray emission has an angular extension of 0.36 degrees.
Photon index of the emission is 2.68.
Hadronic processes are favored as the emission mechanism.
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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