Synergies between Gaia, LSST and LISA

Sammanfattning: The scientific development of astronomy today mainly comes from the information that can be obtained via electromagnetic radiation. Today, the Gaia optical telescope is one of the most ambitious space projects man has ever completed. Another optical telescope LSST is designed to complement Gaia. In about 15 years it will also be possible to measure gravitational waves with the telescope LISA, which will detect binary stars, especially white dwarfs. Using gravitational waves will give completely different types of measurements. It has also been found that a combination of the data from the two methods will give the possibility of a synergy effect, which means that it provides more information about the Universe than the sum of the information from each telescope. This is called multi-messenger astronomy, which in many areas has resulted in a remarkable development of opportunities in recent years (Egberts (2020)). Synergy effects will make it easier to identify objects and reduce uncertainty in distance. It gives the possibility to calculate extra values such as the mass of the respective stars in binaries. Multi-messenger astronomy will also help understand the historical evolution of stars, galaxies and dark matter. Different reviews are presented on the possibility of performing multi-messenger detection by Gaia, LSST and LISA. They have been discussed in many different papers. The purpose of this thesis is to review these observations and find out what their synergies together give which could not be achieved alone.