Investigation of micro-lensing events in gaia light

It is a tool for astronomers that astrophysical objects bend the light with the gravitational effect. This event is known as Gravitational Lensing. Two or more objects must be aligned in the sky for such a lensing. When the right conditions are provided for the observer, the lensing event gives information about the position and composition of the objects. Mass-Gravitational Lensing, a very useful tool, requires precise photometric observation and astrometric data. Since the amount of bending light will depend on the mass of the object, the lensing event that small mass objects will change the amount of brightness coming from the object in the same proportion by a small amount, and this special event is called micro-lensing. Since micro-lensing will not repeat for the same object, it is necessary to observe the entire sky or the locations where this event can take place throughout the year. OGLE (Optical Gravitational Lensing Experiment), one of the projects making these observations, shares its photometric data with the early warning system. Within the scope of the thesis, it is aimed to calculate the parameters of the lensing event by using OGLE's early warning data set and to develop a program that can make new solutions for the next studies. A computer code written does the calculations by taking photometric data over OGLE-EWS (Optical Gravitational Lensing Experiment-Early Warning System) and using statistics. It obtains parallax and self-motion information by matching these objects with the GAIA (Global Astrometric Interferometry for Astrophysics) data set, if any. It creates a subfloor for future work by cataloging the obtained data.