Spinning Particle Motion around Kerr-like Black Hole Surrounded by the Dark Matter Halo
ZHANG Chengjian
LIU Xianming
Abstract：Investigations were conducted on the gravitational dynamical properties of Kerr-like black holes surrounded by dark matter halos,with a focus on examining the influence of dark matter halos on the motion of spinning particles.The Mathisson-Papapetrou-Dixon(MPD)equation combined with the Tulczyjew spin supplementary condition(SCC)was employed to derive the effective potential of spinning particles,and the physical characteristics of their innermost stable circular orbit(ISCO)were analyzed.The results indicated that as the density and radius of the dark matter halo increased,both the orbital radius and angular momentum of the spinning particles' ISCO exhibited a monotonically increasing trend;in contrast,the energy showed significant non-monotonic variation characteristics:it first decreased with the increase of dark matter halo parameters,reached a minimum value,and then rose gradually.The research findings deepened the understanding of the gravitational interaction mechanism between black holes and dark matter halos,providing a theoretical basis for comprehending their complex dynamical processes.
Keywords：Kerr-like black holespinning particlesinnermost stable circular orbitdark matter haloeffective potential
Publication Date：2026-03-20
Online Publishing Date：2026-03-26(First online date of this platform, not the publication date of the document)
Pages：9( 101-109 )