We calculate the spectrum and high-energy {ν} background flux from photomeson production in active galactic nuclei (AGN), using the recent UV and x-ray observations to define the photon fields and an accretion-disk shock-acceleration model for producing high-energy particles. Collectively, AGN produce the dominant isotropic {ν} background between 10⁴ and 10¹⁰ GeV, detectable with current instruments. AGN {ν}'s should produce a sphere of stellar disruption which may explain the ``broad-line region'' seen in AGN.
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Stecker et al. (1991) studied this question.
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