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dc.date.accessioned2018-02-16T12:35:42Z
dc.date.available2018-02-16T12:35:42Z
dc.date.created2016-12-01T09:52:30Z
dc.date.issued2016
dc.identifier.citationPetrushevska, T. Amanullah, R. Goobar, A. Fabbro, S. Johansson, J. Kjellsson, T. Lidman, C. Paech, K. Richard, J. Dahle, Håkon Ferretti, R. Kneib, J.-P. Limousin, M. Nordin, J. Stanishev, V. . High-redshift supernova rates measured with the gravitational telescope A 1689. Astronomy and Astrophysics. 2016, 594
dc.identifier.urihttp://hdl.handle.net/10852/60167
dc.description.abstractAims. We present a ground-based, near-infrared search for lensed supernovae behind the massive cluster Abell 1689 at z = 0.18, which is one of the most powerful gravitational telescopes that nature provides. Methods. Our survey was based on multi-epoch J-band observations with the HAWK-I instrument on VLT, with supporting optical data from the Nordic Optical Telescope. Results. Our search resulted in the discovery of five photometrically classified, core-collapse supernovae with high redshifts of 0.671 < z < 1.703 and magnifications in the range Δm = − 0.31 to −1.58 mag, as calculated from lensing models in the literature. Owing to the power of the lensing cluster, the survey had the sensitivity to detect supernovae up to very high redshifts, z~3, albeit for a limited region of space. We present a study of the core-collapse supernova rates for 0.4 ≤ z< 2.9, and find good agreement with previous estimates and predictions from star formation history. During our survey, we also discovered two Type Ia supernovae in A 1689 cluster members, which allowed us to determine the cluster Ia rate to be 0.14+0.19-0.09±0.01SNuB h2 (SNuB≡10-12SNe L-1⊙,B yr-1), where the error bars indicate 1σ confidence intervals, statistical and systematic, respectively. The cluster rate normalized by the stellar mass is 0.10+0.13-0.096±0.02 in SNuM h2 (SNuM ≡10-12SNe M-1⊙ yr-1). Furthermore, we explore the optimal future survey for improving the core-collapse supernova rate measurements at z ≳ 2 using gravitational telescopes, and for detections with multiply lensed images, and we find that the planned WFIRST space mission has excellent prospects. Conclusions. Massive clusters can be used as gravitational telescopes to significantly expand the survey range of supernova searches, with important implications for the study of the high-z transient Universe. © ESO, 2016en_US
dc.languageEN
dc.language.isoenen_US
dc.publisherEDP Sciences
dc.titleHigh-redshift supernova rates measured with the gravitational telescope A 1689en_US
dc.typeJournal articleen_US
dc.creator.authorPetrushevska, T.
dc.creator.authorAmanullah, R.
dc.creator.authorGoobar, A.
dc.creator.authorFabbro, S.
dc.creator.authorJohansson, J.
dc.creator.authorKjellsson, T.
dc.creator.authorLidman, C.
dc.creator.authorPaech, K.
dc.creator.authorRichard, J.
dc.creator.authorDahle, Håkon
dc.creator.authorFerretti, R.
dc.creator.authorKneib, J.-P.
dc.creator.authorLimousin, M.
dc.creator.authorNordin, J.
dc.creator.authorStanishev, V.
cristin.unitcode185,15,3,0
cristin.unitnameInstitutt for teoretisk astrofysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1406903
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy and Astrophysics&rft.volume=594&rft.spage=&rft.date=2016
dc.identifier.jtitleAstronomy and Astrophysics
dc.identifier.volume594
dc.identifier.pagecount21
dc.identifier.doihttp://dx.doi.org/10.1051/0004-6361/201628925
dc.identifier.urnURN:NBN:no-62854
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn0004-6361
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/60167/1/aa28925-16.pdf
dc.type.versionPublishedVersion
cristin.articleidA54
dc.relation.projectNFR/239993
dc.relation.projectNFR/188910


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