• Login
    View Item 
    •   Maryland Shared Open Access Repository Home
    • ScholarWorks@UMBC
    • UMBC College of Natural and Mathematical Sciences
    • UMBC Physics Department
    • View Item
    •   Maryland Shared Open Access Repository Home
    • ScholarWorks@UMBC
    • UMBC College of Natural and Mathematical Sciences
    • UMBC Physics Department
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry⋆

    Thumbnail
    Files
    aa31455-17.pdf (1.319Mb)
    Links to Files
    https://www.aanda.org/articles/aa/abs/2018/02/aa31455-17/aa31455-17.html
    Permanent Link
    https://doi.org/10.1051/0004-6361/201731455
    http://hdl.handle.net/11603/18398
    http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2018A%26A...610A...1M
    https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Search&refcode=2018A%26A...610A...1M
    http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+A/610/A1
    Collections
    • UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
    • UMBC Faculty Collection
    • UMBC Physics Department
    Metadata
    Show full item record
    Author/Creator
    Müller, C.
    Kadler, M.
    Ojha, R.
    Schulz, R.
    Trüstedt, J.
    Edwards, P. G.
    Ros, E.
    Carpenter, B.
    Angioni, R.
    Blanchard, J.
    Böck, M.
    Burd, P. R.
    Dörr, M.
    Dutka, M. S.
    Eberl, T.
    Gulyaev, S.
    Hase, H.
    Horiuchi, S.
    Katz, U.
    Krauß, F.
    Lovell, J. E. J.
    Natusch, T.
    Nesci, R.
    Phillips, C.
    Plötz, C.
    Pursimo, T.
    Quick, J. F. H.
    Stevens, J.
    Thompson, D. J.
    Tingay, S. J.
    Tzioumis, A. K.
    Weston, S.
    Wilms, J.
    Zensus, J. A.
    Date
    2018-02-07
    Type of Work
    18 pages
    Text
    journal articles
    Citation of Original Publication
    TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional sources C. Müller, M. Kadler, R. Ojha, R. Schulz, J. Trüstedt, P. G. Edwards, E. Ros, B. Carpenter, R. Angioni, J. Blanchard, M. Böck, P. R. Burd, M. Dörr, M. S. Dutka, T. Eberl, S. Gulyaev, H. Hase, S. Horiuchi, U. Katz, F. Krauß, J. E. J. Lovell, T. Natusch, R. Nesci, C. Phillips, C. Plötz, T. Pursimo, J. F. H. Quick, J. Stevens, D. J. Thompson, S. J. Tingay, A. K. Tzioumis, S. Weston, J. Wilms and J. A. Zensus A&A, 610 (2018) A1 DOI: https://doi.org/10.1051/0004-6361/201731455
    Rights
    This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
    © ESO 2018
    Abstract
    Context. TANAMI is a multiwavelength program monitoring active galactic nuclei (AGN) south of − 30° declination including high-resolution very long baseline interferometry (VLBI) imaging, radio, optical/UV, X-ray, and γ-ray studies. We have previously published first-epoch8.4 GHz 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 γ-ray brightest AGN in the southern quarter of the sky, overlapping with the region from which high-energy (> 100 TeV) neutrino events have been found. Aims. We characterize the parsec-scale radio properties of the jets and compare them with the quasi-simultaneous Fermi/LAT γ-ray data. Furthermore, we study the jet properties of sources which are in positional coincidence with high-energy neutrino events compared to the full sample. We test the positional agreement of high-energy neutrino events with various AGN samples. Methods. TANAMI VLBI observations at 8.4 GHz are made with southern hemisphere radio telescopes located in Australia, Antarctica, Chile, New Zealand, and South Africa. Results. Our observations yield the first images of many jets below − 30° declination at milliarcsecond resolution. We find that γ-ray loud TANAMI sources tend to be more compact on parsec-scales and have higher core brightness temperatures than γ-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 γ-ray brightest AGN in the TANAMI sky show only a weak positional agreement with high-energy neutrinos demonstrating that the > 100 TeV IceCube signal is not simply dominated by a small number of the γ-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.


    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3544


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.

     

     

    My Account

    LoginRegister

    Browse

    This CollectionBy Issue DateTitlesAuthorsSubjectsType

    Statistics

    View Usage Statistics


    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3544


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.