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Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco

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dc.contributor.authorAntoranz Canales, Pedro
dc.contributor.authorBarrio Uña, Juan Abel
dc.contributor.authorContreras González, José Luis
dc.contributor.authorFonseca González, María Victoria
dc.contributor.authorLópez Moya, Marcos
dc.contributor.authorMiranda Pantoja, José Miguel
dc.contributor.authorNieto Castaño, Daniel
dc.date.accessioned2023-06-20T10:37:53Z
dc.date.available2023-06-20T10:37:53Z
dc.date.issued2008-05-20
dc.description© The American Astronomical Society. We would like to thank the IAC for the excellent working conditionsat the Observatory de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, and the Spanish CICYT is gratefully acknowledged. This work was also supported by ETH research grant TH 34/043, and the Polish MNiI grant 1P03D01028.
dc.description.abstractThe nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipGerman BMBF
dc.description.sponsorshipGerman MPG
dc.description.sponsorshipItalian INFN
dc.description.sponsorshipSpanish CICYT
dc.description.sponsorshipETH
dc.description.sponsorshipPolish MNiI
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/23139
dc.identifier.doi10.1086/529135
dc.identifier.issn0004-637X
dc.identifier.officialurlhttp://dx.doi.org/10.1086/529135
dc.identifier.relatedurlhttp://iopscience.iop.org
dc.identifier.relatedurlhttp://arxiv.org/abs/0711.2574
dc.identifier.urihttps://hdl.handle.net/20.500.14352/50834
dc.issue.number1
dc.journal.titleAstrophysical journal
dc.language.isoeng
dc.page.final431
dc.page.initial428
dc.publisherUNIV CHICAGO PRESS
dc.relation.projectIDTH 34/043
dc.relation.projectID1P03D01028
dc.rights.accessRightsopen access
dc.subject.cdu537
dc.subject.cdu539.1
dc.subject.keywordSupersymmetry
dc.subject.keywordParameters.
dc.subject.ucmElectrónica (Física)
dc.subject.ucmElectricidad
dc.subject.ucmFísica nuclear
dc.subject.unesco2202.03 Electricidad
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleUpper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco
dc.typejournal article
dc.volume.number679
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