Rubin LSST to Enhance Kilonovae Detection Through Gravitational Lensing

The Rubin Legacy Survey of Space and Time (LSST) is poised to revolutionize the detection and characterization of Kilonovae (KNe), transient astronomical events resulting from the merger of compact binary systems. The study highlights the challenges associated with identifying these faint and rare phenomena and emphasizes the importance of efficient detection methods to sift through the massive datasets generated by LSST. By simulating realistic populations of both unlensed and gravitationally lensed KNe, the research demonstrates that KNe exhibit a more rapid color evolution compared to Type Ia Supernovae, offering a distinguishing characteristic for identification. The study also investigates the impact of the delay time distribution (DTD) of compact binary mergers on the detectability of KNe, revealing that longer minimum delay times lead to an increased rate of detectable events. Furthermore, the research establishes the magnification requirements for detecting AT2017gfo-like events at varying redshifts, providing valuable guidance for observational strategies. These findings underscore the potential of LSST to significantly advance our understanding of KNe and their role in cosmology and astrophysics.

This research is particularly relevant to the space sector because Kilonovae are thought to be a major source of heavy elements in the universe, including those used in spacecraft construction and propulsion systems. A better understanding of Kilonovae could lead to new insights into the origin and distribution of these elements, which could have implications for future space exploration and resource utilization. The ability to detect and characterize Kilonovae is also important for testing fundamental theories of gravity and cosmology. The data collected by LSST will provide a wealth of information for researchers working in these areas.

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