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dc.contributor.authorAlbert, Andreapt_BR
dc.contributor.authorAnderson, Brandonpt_BR
dc.contributor.authorBechtol, Keithpt_BR
dc.contributor.authorDrlica-Wagner, Alexpt_BR
dc.contributor.authorMeyer, Manuelpt_BR
dc.contributor.authorSánchez-Conde, Miguel A.pt_BR
dc.contributor.authorStrigari, Louis E.pt_BR
dc.contributor.authorWood, Matthew Dunsethpt_BR
dc.contributor.authorAbbott, Timothy M. C.pt_BR
dc.contributor.authorAbdalla, Filipe B.pt_BR
dc.contributor.authorBenoit-Lévy, Aurélienpt_BR
dc.contributor.authorBernstein, Gary M.pt_BR
dc.contributor.authorBernstein, Rebecca A.pt_BR
dc.contributor.authorBertin, Emmanuelpt_BR
dc.contributor.authorBrooks, D.pt_BR
dc.contributor.authorBurke, David Lylept_BR
dc.contributor.authorCarnero Rosell, Aureliopt_BR
dc.contributor.authorCarrasco Kind, Matíaspt_BR
dc.contributor.authorCarretero Palacios, Jorgept_BR
dc.contributor.authorCrocce, Martinpt_BR
dc.contributor.authorCunha, Carlos Eduardopt_BR
dc.contributor.authorD'Andrea, Christopher B.pt_BR
dc.contributor.authorCosta, Luiz N. dapt_BR
dc.contributor.authorDesai, S.pt_BR
dc.contributor.authorDiehl, H. Thomaspt_BR
dc.contributor.authorDietrich, Jörg P.pt_BR
dc.contributor.authorDoel, Peterpt_BR
dc.contributor.authorEifler, Timpt_BR
dc.contributor.authorEvrard, August E.pt_BR
dc.contributor.authorFausti Neto, Angelopt_BR
dc.contributor.authorFinley, David A.pt_BR
dc.contributor.authorFlaugher, Brennapt_BR
dc.contributor.authorFosalba Vela, Pablopt_BR
dc.contributor.authorFrieman, Joshua A.pt_BR
dc.contributor.authorGerdes, David W.pt_BR
dc.contributor.authorGoldstein, Daniel Abrahampt_BR
dc.contributor.authorGruen, Danielpt_BR
dc.contributor.authorGruendl, Robert A.pt_BR
dc.contributor.authorHonscheid, K.pt_BR
dc.contributor.authorJames, David J.pt_BR
dc.contributor.authorKent, Stephen M.pt_BR
dc.contributor.authorKuehn, Kylerpt_BR
dc.contributor.authorKuropatkin, Nikolay P.pt_BR
dc.contributor.authorLahav, Oferpt_BR
dc.contributor.authorLi, T. S.pt_BR
dc.contributor.authorMaia, Marcio Antonio Geimbapt_BR
dc.contributor.authorMarch, Marisa Cristinapt_BR
dc.contributor.authorMarshall, Jennifer L.pt_BR
dc.contributor.authorMartini, Paulpt_BR
dc.contributor.authorMiller, Christopher J.pt_BR
dc.contributor.authorMiquel, Ramonpt_BR
dc.contributor.authorNeilsen, Eric H.pt_BR
dc.contributor.authorNord, Brian Dennispt_BR
dc.contributor.authorOgando, Ricardo L.C.pt_BR
dc.contributor.authorPlazas Malagón, Andrés Alejandropt_BR
dc.contributor.authorReil, Kevinpt_BR
dc.contributor.authorRomer, Anita K.pt_BR
dc.contributor.authorRykoff, Elipt_BR
dc.contributor.authorSanchez-Alvaro, Eusebiopt_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorSchubnell, Michaelpt_BR
dc.contributor.authorSevilla Noarbe, Ignaciopt_BR
dc.contributor.authorSmith, Robert Christopherpt_BR
dc.contributor.authorSoares-Santos, Marcellept_BR
dc.contributor.authorSobreira, Fláviapt_BR
dc.contributor.authorSuchyta, Ericpt_BR
dc.contributor.authorSwanson, Molly E. C.pt_BR
dc.contributor.authorTarle, Gregorypt_BR
dc.contributor.authorVikram, Vinupt_BR
dc.contributor.authorWalker, Alistairpt_BR
dc.contributor.authorWechsler, Risa H.pt_BR
dc.contributor.authorFermi LAT Collaborationpt_BR
dc.contributor.authorDES Collaborationpt_BR
dc.date.accessioned2017-08-24T02:44:07Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn0004-637Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/165708pt_BR
dc.description.abstractWe search for excess γ-ray emission coincident with the positions of confirmed and candidate Milky Way satellite galaxies using six years of data from the Fermi Large Area Telescope (LAT). Our sample of 45 stellar systems includes 28 kinematically confirmed dark-matter-dominated dwarf spheroidal galaxies (dSphs) and 17 recently discovered systems that have photometric characteristics consistent with the population of known dSphs. For each of these targets, the relative predicted γ-ray flux due to dark matter annihilation is taken from kinematic analysis if available, and estimated from a distance-based scaling relation otherwise, assuming that the stellar systems are DM-dominated dSphs. LAT data coincident with four of the newly discovered targets show a slight preference (each ~2σ local) for γ-ray emission in excess of the background. However, the ensemble of derived γ-ray flux upper limits for individual targets is consistent with the expectation from analyzing random blank-sky regions, and a combined analysis of the population of stellar systems yields no globally significant excess (global significance <1s). Our analysis has increased sensitivity compared to the analysis of 15 confirmed dSphs by Ackermann et al. The observed constraints on the DM annihilation cross section are statistically consistent with the background expectation, improving by a factor of ~2 for large DM masses (mDM,bb¯> 1 TeV and mDM,t+t-> 70 GeV) and weakening by a factor of ~1.5 at lower masses relative to previously observed limits.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe astrophysical journal. Bristol. Vol. 834, no. 2 (Jan. 2017), 110, 15 p.pt_BR
dc.rightsOpen Accessen
dc.subjectDark matteren
dc.subjectMatéria escurapt_BR
dc.subjectGalaxies: dwarfen
dc.subjectAglomerados globularespt_BR
dc.subjectGamma rays: galaxiesen
dc.subjectGaláxiaspt_BR
dc.subjectVia lácteapt_BR
dc.titleSearching for dark matter annihilation in recently discovered Milky Way satellites with Fermi-LATpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001024418pt_BR
dc.type.originEstrangeiropt_BR


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