Speaker
Description
Recurrent Novae (RNe) are known to experience multiple eruptions in the form of thermonuclear explosions, due to the accumulation of material accreted by a white dwarf from a binary companion star.
The well known RN RS Ophiuchi (RS Oph) underwent its latest eruption in 2021 and triggered numerous follow-up observations world wide, including with the High Energy Stereoscopic System (H.E.S.S.), an array of Imaging Atmospheric Cherenkov Telescopes.
Non-thermal emission up to TeV energies is observed coincident with the Nova eruption within the first days and up to a month after the optical peak, establishing novae as Galactic transients reaching TeV energies.
Analysis and interpretation of the data identifies time-resolved acceleration of cosmic-rays, constraining models of particle energisation.
Combining the data taken by H.E.S.S. with concurrent observations taken by the Fermi-LAT, a similar temporal profile is observed, favouring a common origin to the emission.
In this talk, the detection of the non-thermal VHE emission from the RN RS Oph by H.E.S.S. will be presented and plausible models for the VHE emission discussed.
