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SUMMARY:Numerical Reconstruction of Dark-Matter Spikes around Black Holes 
 and Their Connection to Gamma-Ray Observables
DTSTART;VALUE=DATE-TIME:20260820T200000Z
DTEND;VALUE=DATE-TIME:20260820T202000Z
DTSTAMP;VALUE=DATE-TIME:20260828T023917Z
UID:indico-contribution-1449@indico.uni.edu.pe
DESCRIPTION:Speakers: LUIS ALEJANDRO  ASTO RIVERA (PUCP)\nThe adiabatic gr
 owth of a black hole within a collisionless dark-matter halo can generate 
 a steep central overdensity\, or dark-matter spike\, potentially enhancing
  annihilation signals by several orders of magnitude. We present an indepe
 ndent numerical reconstruction of the Gondolo–Silk formalism and its ext
 ension to intermediate-mass black holes by Bertone\, Zentner\, and Silk.\n
 \nFor the Gondolo–Silk scenario\, the final density distribution is reco
 nstructed from phase-space integrals while conserving angular momentum and
  radial action during the transition to a black-hole-dominated potential. 
 We recover the isothermal solution and generate cusped profiles for differ
 ent initial logarithmic slopes\, including the full radial correction and 
 spike-radius dependence.\n\nComparison with the published parametrization 
 reveals normalization discrepancies for non-isothermal configurations\, re
 aching approximately two orders of magnitude\, while agreement improves in
  the isothermal limit.\n\nWe also implement the Bertone–Zentner–Silk f
 ramework with an NFW halo\, annihilation plateau\, inner cutoff\, J-factor
 \, and gamma-ray flux calculation. A parametric detector-response model th
 en maps the predicted flux into reconstructed event distributions\, provid
 ing an end-to-end framework for future gamma-ray sensitivity studies.\n\nh
 ttps://indico.uni.edu.pe/event/184/contributions/1449/
LOCATION:UNI\, Lima Perú Auditorio de la Facultad de Ciencias
URL:https://indico.uni.edu.pe/event/184/contributions/1449/
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