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A Kerr-Sen-like black hole solution results from Einstein-bumblebee gravity.It contains a Lorentz violating (LV) parameter that enters when the bumblebeefield receives vacuum expectation value through a spontaneously breaking of thesymmetry of the classical action. The geometrical structure concerning thesingularity of this spacetime is studied with reference to the parametersinvolved in the Kerr-Sen-like metric. We introduce this Einstein-bumblebeemodified gravity to probe the role of spontaneous Lorentz violation on thesuperradiance scattering phenomena and the instability associated with it. Weobserve that for the low-frequency range of the scalar wave the superradiancescattering gets enhanced when the Lorentz-violating parameter $\ell$ takes thenegative values and it reduces when values of $\ell$ are positive. The study ofthe black hole bomb issue reveals that for the negative values of $\ell$, theparameter space of the scalar field instability increase prominently, however,for its positive values, it shows a considerable reduction. We also tried toput constraints on the parameters contained in the Kerr-Sen-like black hole bycomparing the deformation of the shadow produced by the black hole parameterswith the observed deviation from circularity and the angular deviation from the$M87*$ data.

Kerr-Sen-like Lorentz violating black holes and Superradiance phenomena