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dc.contributor.authorKahlhoefer, Felix
dc.contributor.authorKaplinghat, Manoj
dc.contributor.authorSlatyer, Tracy Robyn
dc.contributor.authorWu, Chih-Liang
dc.date.accessioned2020-12-09T14:53:40Z
dc.date.available2020-12-09T14:53:40Z
dc.date.issued2019-12
dc.date.submitted2019-10
dc.identifier.issn1475-7516
dc.identifier.urihttps://hdl.handle.net/1721.1/128751
dc.description.abstractWe present results from N-body simulations of self-interacting dark matter (SIDM) subhalos, which could host ultra-faint dwarf spheroidal galaxies, inside a Milky-Way-like main halo. We find that high-concentration subhalos are driven to gravothermal core collapse, while low-concentration subhalos develop large (kpc-sized) low-density cores, with both effects depending sensitively on the satellite's orbit and the self-interaction cross section over mass σ/m. The overall effect for σ/m ≳ 3 cm2/g is to increase the range of inner densities, potentially explaining the observed diversity of Milky Way satellites, which include compact systems like Draco and Segue 1 that are dense in dark matter, and less dense, diffuse systems like Sextans and Crater II . We discuss possible ways of distinguishing SIDM models from collisionless dark matter models using the inferred dark matter densities and stellar sizes of the dwarf spheroidal galaxies. ©2019 IOP Publishing Ltd and Sissa Medialab.en_US
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (DFG) through the Emmy Noether Grant (KA 4662/1-1)en_US
dc.description.sponsorshipOffice of High Energy Physics. DOE (DE-SC00012567)en_US
dc.description.sponsorshipOffice of High Energy Physics. DOE (DE-SC001399)en_US
dc.description.sponsorshipNSF Grant (PHY-1620638)en_US
dc.language.isoen
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttps://dx.doi.org/10.1088/1475-7516/2019/12/010en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourcearXiven_US
dc.titleDiversity in density profiles of self-interacting dark matter satellite halosen_US
dc.typeArticleen_US
dc.identifier.citationKahlhoefer, Felix et al., "Diversity in density profiles of self-interacting dark matter satellite halos." Journal of Cosmology and Astroparticle Physics 2019, 12 (December 2019): 010 ©2019 Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.relation.journalJournal of Cosmology and Astroparticle Physicsen_US
dc.eprint.versionOriginal manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/NonPeerRevieweden_US
dc.date.updated2020-11-09T16:07:44Z
dspace.orderedauthorsKahlhoefer, F; Kaplinghat, M; Slatyer, TR; Wu, C-Len_US
dspace.date.submission2020-11-09T16:07:47Z
mit.journal.volume2019en_US
mit.journal.issue12en_US
mit.licenseOPEN_ACCESS_POLICY
mit.metadata.statusComplete


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