2011/12/28 by Manuel Arca Sedda, Arca-Sedda, M., R. Capuzzo‐Dolcetta +1
Physics and Astronomy · #85 #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Quantum chaos and dynamical systems #Scientific Research and Discoveries #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1112.6101
openalex publication_date 2011/12/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is well known that a large fraction of galaxies have cuspy luminosity profiles in their central regions, at least within the observational resolution. In such cases, the often used, simplified, local approximation for the dynamical friction braking classical term fails when the massive satellite moves through the inner parts of the galaxy, although the scattering integral still converges for phase space distribution singularities that are not too sharp. Here we present preliminary results of our work aiming at finding better and more reliable results from the integration of motion of massive objects (globular clusters) in galaxies where the density diverges to the center in a power law form, with exponent greater than -2.