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We present the analysis of 2.1 years of Fermi/LAT data on 491 Seyfertgalaxies detected by the Swift/BAT survey. Only the two nearest objects, NGC1068 and NGC 4945, which were identified in the Fermi First-year Catalog, aredetected. Using the Swift/BAT and radio 20 cm fluxes, we define a newradio-loudness parameter $R_{X, BAT}$ where radio loud objects have $\log R_{X,BAT} > - 4.7$. Based on this parameter, only radio loud sources are detected byFermi/LAT. An upper limit to the flux of the undetected sources is derived tobe $\sim 2 \times 10^{-11}$ photons cm$^{-2}$ s$^{-1}$, approximately seventimes lower than the observed flux of NGC 1068. Assuming a median redshift of0.031, this implies an upper limit to the $\gamma$-ray (1--100 GeV) luminosityof $\lesssim 3 \times 10^{41}$ erg s$^{-1}$. In addition, we identified 120 newFermi/LAT sources near the Swift/BAT Seyferts with significant Fermi/LATdetections. A majority of these objects do not have \bat counterparts, buttheir possible optical counterparts include blazars, FSRQs, and quasars.

Fermi/LAT Observations of Swift/BAT Seyferts: on the Contribution of Radio-quiet AGN to the Extragalactic Gamma-ray Background