Dark Matter Self-interaction Satellite Evaporation

Class providing models of the evaporation of orbiting satellites due to dark matter self-interactions (SIDM)—the mass loss from satellite halos caused by energetic scattering events between satellite dark matter particles and those of the host halo. High-momentum-transfer scatters can eject satellite particles, gradually eroding the subhalo on top of tidal stripping. Implementations return the satellite mass loss rate (in \(\mathrm{M}_\odot\) Gyr\(^{-1}\)) from SIDM-driven evaporation, which depends on the self-interaction cross-section, the satellite-host relative velocity, and the local number density of host particles.

Default implementation: satelliteEvaporationSIDMKummer2018

Methods

massLossRate → double precision

Returns the satellite mass loss rate due to dark matter self-interactions (in units of \(\mathrm{M}_\odot\)/Gyr).

  • type(treeNode) node [inout]

satelliteEvaporationSIDMKummer2018

A satellite evaporation due to dark matter self-interactions using the model of Kummer et al. (2018).

(Default implementation)

Methods

tabulate

Tabulate the evaporation factor.

  • double precision xMaximum [in]

  • double precision velocityMinimum [in]

  • double precision velocityMaximum [in]

evaporationFactor → double precision

Return the evaporation factor.

  • double precision x [in]

  • double precision velocityRelative [in]