Multi-tracer cross-correlations of Fermi gamma-ray data with DES galaxies and weak lensing detect the unresolved gamma-ray background at 10.31 sigma, confirming its extragalactic origin with source properties distinct from resolved populations.
Tomography of the fermi-latγ-ray diffuse extragalactic signal via cross correlations with galaxy catalogs
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Multi-Tracer Cross-Correlations of the Unresolved $\gamma$-Ray Sky
Multi-tracer cross-correlations of Fermi gamma-ray data with DES galaxies and weak lensing detect the unresolved gamma-ray background at 10.31 sigma, confirming its extragalactic origin with source properties distinct from resolved populations.