Kilonova parameters estimation with LSST at Vera C. Rubin Observatory
arxiv(2024)
摘要
The up-coming Vera Rubin Observatory's Legacy Survey of Space and Time (LSST)
opens a new opportunity to rapidly survey the southern Sky at optical
wavelenghts (ugrizy bands). In this study, we aim to test the possibility
of using LSST observations to constrain the mass and velocity of different KN
ejecta components from the observation of a combined set of light curves from
GRB afterglows and KNæ. We used a sample of simulated light curves from the
aforementioned events as they would have been seen during the LSST survey to
study how observing strategies' choice impacts the 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 4 hours every 2 nights in the
same or different filters. The features of the observing strategy will allow us
to recognize the different stages of the light curve evolution and gather
observations in at least 3 filters.
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