Can Heavy WIMPs Be Captured by the Earth?

Please use this identifier to cite or link to this item:

Show simple item record

Files Size Format View
fac_GouldA_TheAstrophysicalJournal_2001_549_72.pdf 85.07Kb PDF View/Open

dc.creator Gould, Andrew
dc.creator Alam, S. M. Khairul 2011-02-10T18:24:13Z 2011-02-10T18:24:13Z 2001-03-01
dc.identifier.citation Andrew Gould and S. M. Khairul Alam, "Can Heavy WIMPs Be Captured by the Earth?" The Astrophysical Journal, no. 1 (2001), doi:10.1086/319040 en_US
dc.identifier.issn 1538-4357
dc.description.abstract If weakly interacting massive particles (WIMPs) in bound solar orbits are systematically driven into the Sun by solar system resonances (as Farinella and coworkers have shown is the case for many Earth-crossing asteroids), then the capture of high-mass WIMPs by the Earth would be affected dramatically because high-mass WIMPs are captured primarily from bound orbits. WIMP capture would be eliminated for M_x > 630 GeV and would be highly suppressed for M_x >~ 150 GeV. Annihilation of captured WIMPs and anti-WIMPs is expected to give rise to neutrinos coming from the Earth's center. The absence of such a neutrino signal has been used to place limits on WIMP parameters. At present, one does not know whether typical WIMP orbits are in fact affected by these resonances. Until this question is investigated and resolved, one must (conservatively) assume that they are. Hence, limits on high-mass WIMP parameters are significantly weaker than was previously believed. en_US
dc.language.iso en_US en_US
dc.publisher American Astronomical Society en_US
dc.subject minor planets, asteroids en_US
dc.subject dark matter en_US
dc.subject elementary particles en_US
dc.subject Galaxy: halo en_US
dc.title Can Heavy WIMPs Be Captured by the Earth? en_US
dc.type Article en_US
dc.identifier.doi 10.1086/319040
dc.identifier.osuauthor gould.34