Microquasar Cygnus X-3 as the PeVatron powering the Cygnus Bubble

Zhaodong Shi, Guangwei Wang, Ruizhi Yang +1

The recent discovery by the LHAASO collaboration of a variable ultra-high-energy (UHE; $E_{\gamma }\ge$ 100 TeV) $\gamma$-ray source associated with the microquasar Cygnus X-3, with a spectrum…