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We analyzed the globular cluster M5 (NGC 5904) using 15 years of gamma-raydata from the Fermi Large Area Telescope (LAT). Using rotation ephemeridesgenerated from Arecibo and FAST radio telescope observations, we searched forgamma-ray pulsations from the seven millisecond pulsars (MSPs) identified inM5. We detected no significant pulsations from any of the individual pulsars.Also, we searched for possible variations of the gamma-ray emission as afunction of orbital phase for all the six MSPs in binary systems, but did notdetect any significant modulations. The gamma-ray emission from the directionof M5 is well described by an exponentially cutoff power-law spectral model,although other models cannot be excluded. The phase-averaged emission isconsistent with being steady on a time scale of a few months. We estimate thenumber of MSPs in M5 to be between 1 and 10, using the gamma-ray conversionefficiencies for well-characterized gamma-ray MSPs in the Third Fermi LargeArea Telescope Catalog of Gamma-ray Pulsars, suggesting that the sample ofknown MSPs in M5 is (nearly) complete, even if it is not currently possible torule out a diffuse component of the observed gamma rays from the cluster

Characterizing the Gamma-ray Emission Properties of the Globular Cluster M5 with the Fermi-LAT