Implications of a new solar system population of neutralinos on indirect detection rates

Recently, a new Solar System population of weakly interacting massive parti cle (WIMP) dark matter has been proposed to exist. We investigate the impli cations of this population on indirect signals in neutrino telescopes (due to WIMP annihilations in the Earth) for the case when the WIMP is the light est neutralino of the MSSM, the minimal supersymmetric extension of the sta ndard model. The velocity distribution and capture rate of this new populat ion is evaluated and the flux of neutrino-induced muons from the center of the Earth in neutrino telescopes is calculated. The strength of the signal is very sensitive to the velocity distribution of the new population. We an alytically estimate this distribution using the approximate conservation of the component of the WIMP angular momentum orthogonal to the ecliptic plan e. The non-linear problem of combining a fixed capture rate from the standa rd galactic WIMP population with one rising linearly with time from the new population to obtain the present-day annihilation rate in the Earth is als o solved analytically. We show that the effects of the new population can b e crucial for masses below around 150 GeV, where enhancements of the predic ted muon flux from the center of the Earth by up to a factor of 100 compare d to previously published estimates occur. As a result of the new WIMP popu lation, the next generation of neutrino telescopes should be able to probe a much larger region of parameter space in the mass range 60-130 GeV.