  The recent LIGO observation of gravitational waves from a binary black hole
merger triggered several follow-up searches from both electromagnetic wave as
well as neutrino observatories. Since in general, it is expected that all
matter has been removed from the binary black hole environment long before the
merger, no neutrino emission is expected from such mergers. Still, it remains
interesting to test this hypothesis. The ratio of the energy emitted in
neutrinos with respect to gravitational waves represents a useful parameter to
constrain the environment of such astrophysical events. In addition to putting
constraints by use of the non-detection of counterpart neutrinos, it is also
possible to consider the diffuse neutrino flux measured by the IceCube
observatory as the maximum contribution from an extrapolated full class of
BBHs. Both methods currently lead to similar bounds on the fraction of energy
that can be emitted in neutrinos. Nevertheless, combining both methods should
allow to strongly constrain the source population in case of a future neutrino
counterpart detection. The proposed approach can and will be applied to
potential upcoming LIGO events, including binary neutron stars and black
hole-neutron star mergers, for which a neutrino counterpart is expected.
