Multimessenger emission from LHAASO PeVatrons

Le résumé fourni par la source

Microquasars, compact binary systems with an accreting stellar-mass black hole or neutron star, are promising candidates for high-energy particle acceleration. The LHAASO collaboration reported on the detection of $>100$ TeV $\gamma$-ray emission from five microquasars, unveiling their nature as particle accelerators. We study the multimessenger emission of SS 433 and V4641 Sgr. Our model incorporates a jet component and a wind component, and consider leptonic and hadronic scenarios to explain the observed spectra from LHAASO and other high-energy $\gamma$-ray detectors. We calculate the neutrino flux originating from the hadronic component and assess the detectability of these sources with current and future neutrino telescopes. Among these sources, V4641 Sgr has the best prospects of observation with a combined next-generation neutrino telescopes.

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