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In this article, we consider a static and spherically symmetric black holemetric that is a vacuum solution of the traceless metric-affine bumblebeemodel. Our study focuses on the possible implications of the modificationsinduced by the model on various astrophysical observables such as quasinormalmodes, ringdown waveforms, Hawking spectrum, and sparsity. We explore theimpact of the Lorentz symmetry-breaking parameter $\alpha$ on quasinormal modeswith the help of the $6th$ order WKB method. Our inquisition reveals that theemission frequency and decay rate initially decreases with $\alpha$ and thenincreases. The convergence of the WKB method for various orders is also studiedhere. We then analyze the Hawking temperature, spectrum, and sparsity in thismodified gravity framework that provides valuable insights into the thermalradiation emitted by black holes. It points out that the Hawking temperature,the peak of the power spectrum, and the total power emitted initially decreaseand then increase with $\alpha$. However, The variation of the sparsityconcerning $\alpha$ follows a reverse trend. With the extensive study of theseastrophysical phenomena, we intend to study the effects of the metric-affinebumblebee model.

Study of quasinormal modes, greybody bounds, and sparsity of Hawking radiation within the metric-affine bumblebee gravity framework