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dc.contributor.authorMüller, C.
dc.contributor.authorKadler, M.
dc.contributor.authorOjha, R.
dc.contributor.authorSchulz, R.
dc.contributor.authorTrüstedt, J.
dc.contributor.authorEdwards, P.
dc.contributor.authorRos, E.
dc.contributor.authorCarpenter, B.
dc.contributor.authorAngioni, R.
dc.contributor.authorBlanchard, J.
dc.contributor.authorBöck, M.
dc.contributor.authorBurd, P.
dc.contributor.authorDörr, M.
dc.contributor.authorDutka, M.
dc.contributor.authorEberl, T.
dc.contributor.authorGulyaev, S.
dc.contributor.authorHase, H.
dc.contributor.authorHoriuchi, S.
dc.contributor.authorKatz, U.
dc.contributor.authorKrauß, F.
dc.contributor.authorLovell, J.
dc.contributor.authorNatusch, T.
dc.contributor.authorNesci, R.
dc.contributor.authorPhillips, C.
dc.contributor.authorPlötz, C.
dc.contributor.authorPursimo, T.
dc.contributor.authorQuick, J.
dc.contributor.authorStevens, J.
dc.contributor.authorThompson, D.
dc.contributor.authorTingay, Steven
dc.contributor.authorTzioumis, A.
dc.contributor.authorWeston, S.
dc.contributor.authorWilms, J.
dc.contributor.authorZensus, J.
dc.date.accessioned2017-11-20T08:48:36Z
dc.date.available2017-11-20T08:48:36Z
dc.date.created2017-11-20T08:13:40Z
dc.date.issued2018
dc.identifier.citationMüller, C. and Kadler, M. and Ojha, R. and Schulz, R. and Trüstedt, J. and Edwards, P. and Ros, E. et al. 2018. TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources. Astronomy & Astrophysics. 610: A1.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/57677
dc.identifier.doi10.1051/0004-6361/201731455
dc.description.abstract

TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of -30deg declination including high-resolution Very Long Baseline Interferometry (VLBI) imaging, radio, optical/UV, X-ray and gamma-ray studies. We have previously published first-epoch 8.4GHz VLBI images of the parsec-scale structure of the initial sample. In this paper, we present images of 39 additional sources. The full sample comprises most of the radio- and gamma-ray brightest AGN in the southern quarter of the sky, overlapping with the region from which high-energy (>100TeV) neutrino events have been found. We characterize the parsec-scale radio properties of the jets and compare with the quasi-simultaneous Fermi/LAT gamma-ray data. Furthermore, we study the jet properties of sources which are in positional coincidence with high-energy neutrino events as compared to the full sample. We test the positional agreement of high-energy neutrino events with various AGN samples. Our observations yield the first images of many jets below -30deg declination at milliarcsecond resolution. We find that gamma-ray loud TANAMI sources tend to be more compact on parsec-scales and have higher core brightness temperatures than gamma-ray faint jets, indicating higher Doppler factors. No significant structural difference is found between sources in positional coincidence with high-energy neutrino events and other TANAMI jets. The 22 gamma-ray brightest AGN in the TANAMI sky show only a weak positional agreement with high-energy neutrinos demonstrating that the >100TeV IceCube signal is not simply dominated by a small number of the $\gamma$-ray brightest blazars. Instead, a larger number of sources have to contribute to the signal with each individual source having only a small Poisson probability for producing an event in multi-year integrations of current neutrino detectors.

dc.publisherEDP Sciences
dc.titleTANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources
dc.typeJournal Article
dcterms.source.volume-
dcterms.source.titleAstronomy & Astrophysics
curtin.note

Reproduced with permission from Astronomy & Astrophysics, © ESO

curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusOpen access


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