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dc.contributor.authorAcero, F.
dc.contributor.authorBusching, I.
dc.contributor.authorDavids, I.D.
dc.contributor.authorDe Jager, O.C.
dc.contributor.authorHolleran, M.
dc.contributor.authorRaubenheimer, B.C.
dc.contributor.authorVenter, C.
dc.date.accessioned2012-09-05T08:57:52Z
dc.date.available2012-09-05T08:57:52Z
dc.date.issued2011
dc.identifier.citationAcero, F. et al. 2011. Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507–622. Astronomy & astrophysics, 525(A45):1-7. [http://www.aanda.org]en_US
dc.identifier.issn004-6361
dc.identifier.issn1432-0746 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/7233
dc.identifier.urihttp://dx.doi.org/10.1051/0004-6361/201015187
dc.description.abstractContext. The detection of gamma-rays in the very-high-energy (VHE) range (100 GeV−100 TeV) offers the possibility of studying the parent population of ultrarelativistic particles found in astrophysical sources, so it is useful for understanding the underlying astrophysical processes in nonthermal sources. Aims. The discovery of the VHE gamma-ray source HESS J1507-622 is reported and possibilities regarding its nature are investigated. Methods. The H.E.S.S. array of imaging atmospheric Cherenkov telescopes (IACTs) has a high sensitivity compared with previous instruments (∼1% of the Crab flux in 25 h observation time for a 5σ point-source detection) and has a large field of view (∼5◦ in diameter). HESS J1507-622 was discovered within the ongoing H.E.S.S. survey of the inner Galaxy, and the source was also studied by means of dedicated multiwavelength observations. Results. A Galactic gamma-ray source, HESS J1507-622, located ∼3.5◦ from the Galactic plane was detected with a statistical significance >9σ. Its energy spectrum is well fitted by a power law with spectral index Γ = 2.24 ± 0.16stat ± 0.20sys and a flux above 1 TeVof (1.5± 0.4stat ± 0.3sys) × 10−12 cm−2 s−1. Possible interpretations (considering both hadronic and leptonic models) of the VHE gamma-ray emission are discussed in the absence of an obvious counterpart.en_US
dc.description.urihttp://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/abs/2011/01/aa15187-10/aa15187-10.html
dc.language.isoenen_US
dc.publisherEDP Sciencesen_US
dc.subjectGamma rays: generalen_US
dc.subjectX-rays: generalen_US
dc.titleDiscovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622en_US
dc.typeArticleen_US
dc.contributor.researchID10859748 - Holleran, Mathew
dc.contributor.researchID12006653 - Venter, Christo


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