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Very-high-energy gamma rays from a distant quasar: how transparent is the universe?

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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.authorMiranda Pantoja, José Miguel
dc.contributor.authorNieto Castaño, Daniel
dc.date.accessioned2023-06-20T10:37:51Z
dc.date.available2023-06-20T10:37:51Z
dc.date.issued2008-06-27
dc.description© American Association for the Advancement of Science. We thank the Instituto de Astrofisica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma, Canary Islands. The support of the German Bundesministerium für Bildung und Forschung and Max-Planck Gesellschaft, the Italian Istituto Nazionale di Fisica Nucleare (INFN) and Spanish Centro de nvestigación Científica y Technologia is gratefully acknowledged. This work was also supported by ETH (research grant TH 34/043) and the Polish MNil (grant 1P03D01028).
dc.description.abstractThe atmospheric Cherenkov gamma- ray telescope MAGIC, designed for a low- energy threshold, has detected very- high- energy gamma rays from a giant flare of the distant Quasi- Stellar Radio Source ( in short: radio quasar) 3C 279, at a distance of more than 5 billion light- years ( a redshift of 0.536). No quasar has been observed previously in very- high- energy gamma radiation, and this is also the most distant object detected emitting gamma rays above 50 gigaelectron volts. Because high- energy gamma rays may be stopped by interacting with the diffuse background light in the universe, the observations by MAGIC imply a low amount for such light, consistent with that known from galaxy counts.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipGerman Bundesministerium für Bildung
dc.description.sponsorshipGerman Forschung and Max-Planck Gesellschaft
dc.description.sponsorshipItalian Istituto Nazionale di Fisica Nucleare (INFN)
dc.description.sponsorshipSpanish Centro de Investigación Científica y Tecnológica
dc.description.sponsorshipETH
dc.description.sponsorshipPolish MNil
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/23137
dc.identifier.doi10.1126/science.1157087
dc.identifier.issn0036-8075
dc.identifier.officialurlhttp://dx.doi.org/10.1126/science.1157087
dc.identifier.relatedurlhttp://www.sciencemag.org
dc.identifier.relatedurlhttp://arxiv.org/abs/0807.2822
dc.identifier.urihttps://hdl.handle.net/20.500.14352/50832
dc.issue.number5884
dc.journal.titleScience
dc.language.isoeng
dc.page.final1754
dc.page.initial1752
dc.publisherAmer Assoc Advancement Science
dc.relation.projectIDTH 34/043
dc.relation.projectID1P03D01028
dc.rights.accessRightsopen access
dc.subject.cdu537
dc.subject.cdu539.1
dc.subject.keywordExtragalactic Background Light
dc.subject.keywordTelescope
dc.subject.keywordRadiation
dc.subject.keyword3C-279
dc.subject.keywordCounts.
dc.subject.ucmElectrónica (Física)
dc.subject.ucmElectricidad
dc.subject.ucmFísica nuclear
dc.subject.unesco2202.03 Electricidad
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleVery-high-energy gamma rays from a distant quasar: how transparent is the universe?
dc.typejournal article
dc.volume.number320
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