Comunicazione
Kilonova parameters estimation with LSST at Vera C. Rubin Observatory.
Ragosta F., Ahumada T., Andreoni I., Piranomonte S., Colombo A., Salafia O. S.
Kilonovae (KNe) are rare events that occur when unstable heavy isotopes undergo radioactive decay after synthesis by the rapid neutron capture in the ejecta. To decode the informations form transients' feature, which could provide insight into the merger dynamics and the neutron star matter equation of state (EoS), we need to compare models with the data. In this study, we aim to test the possibility of using Vera C. Rubin Observatory (VRO) photometric observations within the Legacy Survey of Space and Time (LSST) to constrain the mass and velocity of different KN ejecta components. We used a sample of simulated light curves and applied several observational constraints to produce observed light curves and to study how strategies' choice impact parameters' estimation. We found that the observing strategy design to be the best compromise between light curves coverage, observed filters and fit reliability involves a high number of visits with long gap pairs of about 2 hours every 2 nights in the same or different filters. These features of the observing strategy will allow us to recognize the different stages of light curve evolution and gather observations in at least 3 filters.