4 papers
Broadband emission of microquasar remnants
Leandro Abaroa, Gustavo E. Romero, Valentí Bosch-Ramon
Microquasar remnants (MQRs), the long-lived cocoons inflated by extinct microquasar jets, have recently been proposed as hidden Galactic PeVatrons capable of producing ultra-high-e…
Microquasar remnants as reservoirs of PeV cosmic rays
Leandro Abaroa, Gustavo E. Romero, Valentà Bosch-Ramón
The Large High Altitude Air Shower Observatory (LHAASO) has revealed a population of Galactic gamma-ray sources radiating beyond 100 TeV, but the nature of several of them is still…
Microquasar remnants as hidden PeVatrons
Leandro Abaroa, Gustavo E. Romero, Valentà Bosch-Ramon
The Large High Altitude Air Shower Observatory (LHAASO) has revealed numerous ultrahigh-energy gamma-ray sources of unknown origin. We propose that a fraction of them can be explai…
Effects of Bethe-Heitler pair production in ultraluminous X-ray sources
Gustavo Esteban Romero, Lucas Manuel Pasquevich, Leandro Abaroa
Some black holes in X-ray binaries accrete at rates far above the Eddington limit. In this supercritical regime, photons are trapped in a radiation-dominated, geometrically thick d…