Speaker
Description
LHAASO J2108+5157 is a recently discovered source, detected in the Ultra-High-Energy band by the LHAASO collaboration. Since two molecular clouds were identified in the direction coincident with LHAASO J2108+5157, this source makes a promising galactic PeVatron candidate.
In 2021, the Large-Sized Telescope prototype (LST-1), the first inaugurated Imaging Atmospheric Cherenkov Telescope (IACT) of the Cherenkov Telescope Array (CTA) Observatory, observed LHAASO J2108+5157 for many hours. Through the analysis of LST-1 data we managed to put stringent upper limits on the source emission in the multi-TeV band. Together with the analysis of \textit{XMM-Newton} data and 12 years of \textit{Fermi}-LAT data, we performed a multiwavelength study of the source, investigating different possible scenarios of particle acceleration.
In this contribution I will present the LST-1 telescope and the analysis performed on almost 50 hours of observations of the source. In addition, I will give an insight on the different interpretations of the performed multiwavelength modelling.
