Speaker
Description
Galactic PeVatrons are astrophysical sources accelerating particles up to a few PeV (~10^15 eV), which are believed to be located within our Galaxy. The primary identification of both electron and proton PeVatrons is gamma-ray radiation at ultra-high energies (UHE, E>100 TeV). In 2021, LHAASO detected 14 steady gamma-ray sources with photon energies above 100 TeV and up to 1.4 PeV. Most sources contain possible source associations, such as supernova remnants, pulsar wind nebulae, and stellar clusters. However, two sources, LHAASO J2108+5157 and LHAASO J0341+5258, lack a clear source association. Therefore, multiwavelength observations are required to identify the PeVatrons responsible for the UHE gamma rays, understand the source morphology and association, and shed light on the emission processes. Here, we will present the status of VERITAS, HAWC, and XMM-Newton observations of these PeVatrons, along with multiwavelength modeling, which will help us establish the nature of these sources and their emission mechanisms.
