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SUMMARY:Cosmic rays meet dark matter: New astrophysical probes of light da
 rk matter
DTSTART:20260324T141500Z
DTEND:20260324T160000Z
DTSTAMP:20260506T110500Z
UID:indico-event-50693@agenda.infn.it
DESCRIPTION:Speaker: Marco Chianese\nAbstract\nAlthough the gravitational 
 effects of Dark Matter (DM) are firmly established across a wide range of
  astrophysical and cosmological observations\, its particle nature remain
 s unknown\, as no definitive evidence for non-gravitational interactions 
 has yet emerged despite decades of experimental searches. In this framewo
 rk\, the sub-GeV mass range remains largely unexplored due to the limited
  sensitivity of current direct-detection experiments to low-energy nucle
 ar recoils. \nIn this talk\, I will discuss how the study of the interacti
 ons between high-energy Cosmic Rays (CRs) and dark matter provides a novel
  pathway to probe light DM particles. I will show that CR-DM scatterings o
 ccurring in astrophysical environments can modify the CR transport\, leavi
 ng observable signatures in the gamma-ray emission produced during their p
 ropagation. In particular\, I will examine the impact of CR–DM interacti
 ons in two astrophysical settings. First\, I will focus on starburst galax
 ies\, which act as efficient cosmic-ray reservoirs and prominent sources o
 f high-energy gamma rays. I will then consider active galactic nuclei\, wh
 ere relativistic jets accelerate particles to extreme energies and generat
 e broadband electromagnetic emission. Hence\, I will discuss the resulting
  constraints on DM properties and demonstrate how these astrophysical prob
 es can complement and extend current experimental searches into previously
  inaccessible regions of parameter space.\n\nhttps://agenda.infn.it/event/
 50693/
LOCATION:Aula Multimediale (Dipartimento di Fisica)
URL:https://agenda.infn.it/event/50693/
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