Black Hole Or Neutron Star? Predictions On The Secondary Mass In GW190814

This paper aims to predict the identity of the secondary mass in gravitational wave event GW190814. The mysterious secondary mass falls between the mass gap of neutron stars and black holes, specifically from 2.5 to 5 solar masses, creating a long-lasting debate regarding the identity of the celestial body. The paper would first approach the estimation by literature review, comparing the event with other events of similar parameters to obtain a possible suggestion of the identity. Then, the paper would present statistical models that summarize all existing gravitational wave events, revealing the population relations of different parameters and the secondary mass’s identity. By locating the parameters of GW190814 on these graphs, possibility percentages could be made. After weighing all estimations, the conclusion of the secondary mass of GW190814 being a black hole is made.