This work investigates the impacts of energy-momentum conservation violation
on the configuration of strange stars constraint with gravitational wave (GW)
event GW190814 as well as eight recent observations of compact objects. The
gravitational wave echoes from these interesting classes of compact objects are
also calculated. To describe the matter of strange stars, we have used two
different equations of state (EoSs): first an ad-hoc exotic EoS, the stiffer
MIT Bag model and next realistic CFL phase of quark matter EoS. We choose
Rastall gravity as a simple model with energy-momentum conservation violation
with a set of model parameter values. Our results show that this gravity theory
permits stable solutions of strange stars and the resulting structures can
foster GW echoes. We illustrate the implication of the gravity theory and found
that the negative values of the Rastall parameter result in more compact
stellar configurations and lower GW echo frequency. With an increase in the
Rastall parameter, both the compactness of the stellar configurations and echo
time decrease. It is worth mentioning here that with the chosen set of some
probable strange star candidates from observational data and also in light of
GW 190814, we have evaluated the radii of stellar models. Also, the GW echo
frequencies associated with strange stars are found to be in the range of
β41β58 kHz for both cases.Comment: 8 figures and 4 table