Speaker
Description
Largerly due to the spectral degeneracy in high-energy observations, the composition of black hole jets, wheter lepton-dominated or baryon-loaded, remains a longstanding open question. We propose that extreme mass ratio (EMR) black hole binaries, particularly systems involving a secondary microquasar interacting periodically with the accretion flow of a primary supermassive black hole, can serve as natural laboratories for disentangling jet composition. The periodic jet–accretion collisions in the system can result in distinct emission signatures shaped by underlying leptonic or hadronic processes. By modeling how these periodic features vary with jet composition, we explore that multi-frequency observations can effectively discriminate between jet compositions. These electromagnetic imprints offer a complementary probe to the emerging multi-messenger approaches for uncovering the nature of black hole relativistic jets.
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