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dc.contributor.authorAcero, F.en_US
dc.contributor.authorBüsching, I.en_US
dc.contributor.authorDavids, I.D.en_US
dc.contributor.authorDe Jager, O.C.en_US
dc.contributor.authorRaubenheimer, B.C.
dc.contributor.authorVenter, C.
dc.contributor.authorH.E.S.S. Collaboration
dc.date.accessioned2010-08-04T15:37:29Z
dc.date.available2010-08-04T15:37:29Z
dc.date.issued2009en_US
dc.identifier.citationAcero, F. et al. 2009. Detection of gamma rays from a starburst galaxy. Science, 326(5956): 1080-1082. [http://dx.doi.org/10.1126/science.1178826]en_US
dc.identifier.issn0036-8075
dc.identifier.issn1095-9203 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/3465
dc.identifier.urihttp://dx.doi.org/10.1126/science.1178826
dc.description.abstractStarburst galaxies exhibit in their central regions a highly increased rate of supernovae, the remnants of which are thought to accelerate energetic cosmic rays up to energies of ~1015 electron volts. We report the detection of gamma rays—tracers of such cosmic rays—from the starburst galaxy NGC 253 using the High Energy Stereoscopic System (H.E.S.S.) array of imaging atmospheric Cherenkov telescopes. The gamma-ray flux above 220 billion electron volts is F = (5.5 ± 1.0stat ± 2.8sys) × 10−13 cm−2 s−1, implying a cosmic-ray density about three orders of magnitude larger than that in the center of the Milky Way. The fraction of cosmic-ray energy channeled into gamma rays in this starburst environment is five times as large as that in our Galaxy
dc.description.abstractStarburst galaxies exhibit in their central regions a highly increased rate of supernovae, the remnants of which are thought to accelerate energetic cosmic rays up to energies of ~1015 electron volts. We report the detection of gamma rays—tracers of such cosmic rays—from the starburst galaxy NGC 253 using the High Energy Stereoscopic System (H.E.S.S.) array of imaging atmospheric Cherenkov telescopes. The gamma-ray flux above 220 billion electron volts is F = (5.5 ± 1.0stat ± 2.8sys) × 10−13 cm−2 s−1, implying a cosmic-ray density about three orders of magnitude larger than that in the center of the Milky Way. The fraction of cosmic-ray energy channeled into gamma rays in this starburst environment is five times as large as that in our Galaxy
dc.publisherAAAS
dc.titleDetection of gamma rays from a starburst galaxyen_US
dc.contributor.researchID13235176 - Büsching, Ingo
dc.contributor.researchID13146629 - Davids, Isak Delberth
dc.contributor.researchID10065857 - De Jager, Ocker Cornelis
dc.contributor.researchID10179240 - Raubenheimer, Barend Christoffel
dc.contributor.researchID12006653 - Venter, Christo


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