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- W4289446308 abstract "Accurate models of the structural evolution of dark matter subhaloes, as they orbit within larger systems, are fundamental to understanding the detailed distribution of dark matter at the present day. Numerical simulations of subhalo evolution support the idea that the mass loss associated with tidal stripping is most naturally understood in energy space, with the particles that are the least bound being removed first. Starting from this premise, we recently proposed a zero-parameter energy-truncation model for subhalo evolution. We tested this model with simulations of tidal stripping of satellites with initial NFW profiles, and showed that the energy-truncation model accurately predicts both the mass loss and density profiles. In this work, we apply the model to a variety of Hernquist, Einasto and King profiles. We show that it matches the simulation results quite closely in all cases, indicating that it may serve as a universal model to describe tidally stripped collisionless systems. A key prediction of the energy-truncation model is that the central density of dark matter subhaloes is conserved as they lose mass; this has important implications for dark matter annihilation calculations, and for other observational tests of dark matter." @default.
- W4289446308 created "2022-08-02" @default.
- W4289446308 creator A5041887879 @default.
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- W4289446308 date "2022-07-29" @default.
- W4289446308 modified "2023-09-27" @default.
- W4289446308 title "A universal model for the evolution of tidally stripped systems" @default.
- W4289446308 doi "https://doi.org/10.48550/arxiv.2207.14803" @default.
- W4289446308 hasPublicationYear "2022" @default.
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