http://hdl.handle.net/2268.2/11097 Sat, 07 Mar 2026 12:53:37 GMT 2026-03-07T12:53:37Z http://hdl.handle.net/2268.2/12716 Title: Final thesis: PISCO: a Pipeline for the Infrared Spectroscopy of COmets. Application to VLT/CRIRES observations of comet 8P/Tuttle Abstract: This work focuses on the development of the Pipeline for the Infrared Spectroscopy of COmets (PISCO), an integrated compilation of tools and home-made scripts aimed to efficiently and entirely process IR comet observations, from raw images to yielding the production rates. It is part of a starting effort from the Comet group of the STAR Institute of the University of Liège to develop IR spectroscopy capabilities with the ultimate goal of making joint observation campaigns of both the parent species (detectable in the IR) and daughter species (detectable in the UV-Vis) in comets. Challenges and perspectives for the study of comets and multiwavelength spectroscopy are presented. The different steps of PISCO are described in details, before using the pipeline to process a 8P/Tuttle comet CRIRES dataset. Finally, possible improvements are discussed. Sun, 05 Sep 2021 22:00:00 GMT http://hdl.handle.net/2268.2/12716 2021-09-05T22:00:00Z http://hdl.handle.net/2268.2/11942 Title: Final thesis: Is the covid-19 lockdown affecting air quality above the Jungfraujoch Observatory? Abstract: The aim of this master’s thesis was to study the abundances of multiple tropospheric air pollutants, monitored at the Jungfraujoch Observatory (Switzerland), in the context of the covid-19 lockdown. It was found that the abundance of multiple species was reduced in year 2020 in comparison to the multiyear time series (2010-2019). More specifically, C2H2, C2H4, C2H6, CH3OH, H2CO, HCOOH and tropospheric O3 concentrations were reduced during lockdown. However, for CH4, CO, HCN and NH3, no concluding or robust evidences of an effect of lockdown on their abundances was found. Further research is needed to clarify and quantify to what extent the covid-19 lockdown has contributed to this atmospheric change. Sun, 27 Jun 2021 22:00:00 GMT http://hdl.handle.net/2268.2/11942 2021-06-27T22:00:00Z