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The Brazilian spherical antenna (Schenberg) is planned to detect highfrequency gravitational waves (GWs) ranging from 3.0 kHz to 3.4 kHz. There is ahost of astrophysical sources capable of being detected by the Brazilianantenna, namely: core collapse in supernova events; (proto)neutron starsundergoing hydrodynamical instability; f-mode unstable neutron stars, caused byquakes and oscillations; excitation of the first quadrupole normal mode of 4-9solar mass black holes; coalescence of neutron stars and/or black holes; exoticsources such as bosonic or strange matter stars rotating at 1.6 kHz; andinspiralling of mini black hole binaries. We here address our study inparticular to the neutron stars, which could well become f-mode unstableproducing therefore GWs. We estimate, for this particular source of GWs, theevent rates that in principle can be detected by Schenberg and by the DutchMini-Grail antenna.Comment: 7 pages, 3 figures; Classical and Quantum Gravity (in press

Detectability of f -mode unstable neutron stars by the Schenberg spherical antenna