Multiband photometry of WASP-52b

This Master’s thesis is a study of the exoplanet WASP-52b, a hot Jupiter discovered in 2013 (Hébrard et al., 2013), using multiband photometry to constrain the atmospheric properties of WASP-52b. I analyzed various data sets from multiple observations performed with different ground-based telescopes (including published literature data and unpublished data from TASTE and NOT) as well as from the TESS space telescope. Observing the variation of Rp/Rs in different bands, I found that there is an increase in the planet-to-star radius ratio observed in the u band with respect to values at longer wavelengths: the values are included between 0.15139 for the Bessel B band and 0.1736 for the Sloan u band, so the radius ratio increases by ≈ 15%. This is consistent with the characteristic slope of Rayleigh scattering, and is possibly partly contaminated by stellar activity of WASP-52. In addition, I studied the possible presence of Transit Timing Variations (TTVs), but no clear TTV periodicity was identified.