Detection of very-high energy gamma rays from RS Ophiuchi nova outburst with the Large-Sized Telescope of the Cherenkov Telescope Array

The first Large-Sized Telescope (LST-1) of the future Cherenkov Telescope Array (CTA) is located in the northern site of CTA, the Roque de los Muchachos Observatory in the island of La Palma. The LST-1 started its commissioning phase in November 2019 and has been collecting data since then. In August 2021 an outburst from the recurrent nova RS Ophiuchi, a binary system consisting of a red giant and a white dwarf, was reported in optical and high energy (HE) gamma rays. The LST-1 observed RS Ophiuchi during several nights coincident with the outburst and detected a signal of very-high energy (VHE) gamma rays together with the current generation of gamma-ray observatories. This is the first time a nova is detected in the VHE range. In this contribution the results from the LST-1 observations will be presented.