Speaker
Description
The Cygnus-X star forming complex is a very active and interesting region of the Galaxy with massive molecular clouds and candidate PeVatron sources, such as the young massive stellar association Cygnus OB2.
Indeed, a gamma-ray emission from this region has been initially observed by Milagro, and subsequently by Fermi-LAT (HE), Argo (VHE), HAWC (VHE) e LHAASO (VHE-UHE). This emission was only hinted in neutrinos, so far.
Motivated by these recent claims, we investigate a possible neutrino excess from the Cygnus-X region by analyzing the IceCube public track-like data sample which comprise 10 years (2008-2018) of data taking.
We model both gamma-ray and neutrino emission assuming a pure hadronic scenario, where CRs are accelerated by Cygnus OB2. When performing a multi-messanger fit, we also account for the effect of particle propagation in the environment surrounding the association. Finally, when comparing to the neutrino data, we model the emission related to the diffuse cosmic-ray sea in this region by using the KRA-gamma model.
