Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/127186
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dc.contributor.authorAbdalla, H.en
dc.contributor.authorAdam, R.en
dc.contributor.authorAharonian, F.en
dc.contributor.authorBenkhali, F.A.en
dc.contributor.authorAnguner, E.O.en
dc.contributor.authorArakawa, M.en
dc.contributor.authorArcaro, C.en
dc.contributor.authorArmand, C.en
dc.contributor.authorArmstrong, T.en
dc.contributor.authorAshkar, H.en
dc.contributor.authorBackes, M.en
dc.contributor.authorBaghmanyan, V.en
dc.contributor.authorMartins, V.B.en
dc.contributor.authorBarnacka, A.en
dc.contributor.authorBarnard, M.en
dc.contributor.authorBecherini, Y.en
dc.contributor.authorBerge, D.en
dc.contributor.authorBernloehr, K.en
dc.contributor.authorBottcher, M.en
dc.contributor.authorBoisson, C.en
dc.contributor.authoret al.en
dc.date.issued2020en
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2020; 494(4):5590-5602en
dc.identifier.issn0035-8711en
dc.identifier.issn1365-2966en
dc.identifier.urihttp://hdl.handle.net/2440/127186-
dc.description.abstractWe report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac objects KUV 00311−1938 and PKS 1440−389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE γ-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311−1938 of z < 0.98 and of PKS 1440−389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311−1938 is constrained to 0.51 ≤ z < 0.98 and of PKS 1440−389 to 0.14 ⪅ z < 0.53.en
dc.description.statementofresponsibilityH. Abdalla … P. deWilt … K. Feijen … G. Rowell … et al. (H.E.S.S. Collaboration)en
dc.language.isoenen
dc.publisherOxford University Pressen
dc.rights© 2020 The Author(s). Published by Oxford University Press on behalf of The Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.subjectBL Lacertae objects: individual; galaxies: high-redshift; gamma-rays: general; resolved and unresolved sources as a function of wavelengthen
dc.titleVery high energy γ-ray emission from two blazars of unknown redshift and upper limits on their distanceen
dc.title.alternativeVery high energy gamma-ray emission from two blazars of unknown redshift and upper limits on their distanceen
dc.typeJournal articleen
dc.identifier.rmid1000022705en
dc.identifier.doi10.1093/mnras/staa999en
dc.identifier.pubid537107-
pubs.library.collectionPhysics publicationsen
pubs.library.teamDS14en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
dc.identifier.orcidRowell, G. [0000-0002-9516-1581]en
Appears in Collections:Physics publications

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