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SUMMARY:SPACE seminar: Dimitrios Kantzas - "X-ray binaries and active gala
 ctic nuclei as cosmic ray accelerators"
DTSTART:20260428T100000Z
DTEND:20260428T110000Z
DTSTAMP:20260531T062500Z
UID:indico-event-17652@indico.global
DESCRIPTION:\nSpeaker: Dimitrios Kantzas (New York University Abu Dhabi)\n
 Abstract: Recent advancements in gamma-ray observations and theoretical mo
 deling are transforming our understanding of relativistic jets across scal
 es\, from black hole X-ray binaries (BHXBs) to active galactic nuclei (AGN
 ). Jets are efficient cosmic ray (CR) accelerators to PeV energies\, contr
 ibuting to the diffuse gamma-ray and neutrino fluxes. In BHXBs\, jets pers
 ist even during quiescence\, like the case of A0620–00\, suggesting thei
 r contribution to Galactic PeVatrons has been underestimated\, particularl
 y after the recent results of LHAASO on TeV emission from BHXBs. Additiona
 lly\, AGN jets reveal complex interactions between CR and their environmen
 ts\, producing multiwavelength (MW) emission through leptonic and hadronic
  processes. In this talk\, I will present a unified framework for modeling
  jets. This model bridges the gap between small-scale BHXB jets and large-
 scale AGN jets\, incorporating the effects of interactions with light dark
  matter. Applying BHJet to A0620–00 highlights the potential cumulative 
 gamma-ray and X-ray contributions of the BHXB population\, with implicatio
 ns for their detectability with future observatories like CTA. For AGN\, B
 HJet captures the steady-state MW emission accounting for the elastic scat
 tering between CRs and light DM particles. This analysis not only deepens 
 our understanding of jet physics but also offers insights into the potenti
 al dark matter signatures in jet environments\, advancing the study of ast
 rophysical PeVatrons and their role in fundamental physics.\nReferences:\n
 \nD. Kantzas\, F. Calore\, Astron.Astrophys. 690 (2024) A87\, arXiv:2406.1
 1981\nD. Kantzas\, F. Calore\, M. Chianese\, Phys.Rev.D 113 (2026) 2\, 023
 048\, arXiv:2509.18850\n\n \n\nZoom link: click here\n\nhttps://indico.
 global/event/17652/
LOCATION:Aula 4 (San Marcellino)
URL:https://indico.global/event/17652/
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