Impacts on the Moon: Analysis methods and size distribution of impactors. (June 2021) - Avdellidou, Chrysa
Abstract: We are preparing a telescope system to carry out a survey of detection and analysis of lunar impact flashes. In the framework of this project, here we present all necessary methods to automatically identify these luminous events, their lunar impact coordinates, the origin of the impacting meteoroids, as well as the estimation of their physical properties such as mass and size. We tested our methods against confirmed impact events and constructed the meteoroid size frequency distribution of impactors using literature data of the last 20 years. In addition, we present the first lunar impact event observed from the Observatoire de la Côte d'Azur that was detected during the testing phase of our project. Highlights: Methodology to detect, locate and analyse LIFs. First LIF detected from Nice, France. Temperatures of LIFs follow a log-normal distribution with node that agrees with theoretical values. values. The SFD of cm-dm meteoroids has a knee at sizes around 10 cm with corresponding slopes −1.4 for the smaller and −2.2 for the larger meteoroids.