Radio and gamma-ray properties of extragalactic jets from the TANAMI sample

Boeck M, Kadler M, Müller C, Tosti G, Ojha R, Wilms J, Bastieri D, Burnett T, Carpenter B, Cavazzuti E, Dutka M, Blanchard J, Edwards PG, Hase H, Horiuchi S, Jauncey DL, Krauß F, Lister ML, Lovell JEJ, Lott B, Murphy DW, Phillips C, Ploetz C, Pursimo T, Quick J, Ros E, Taylor G, Thompson DJ, Tingay SJ, Tzioumis A, Zensus JA (2016)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Publisher: EDP Sciences

Book Volume: 590

Article Number: A40

DOI: 10.1051/0004-6361/201424773

Abstract

The TANAMI program has been observing parsec-scale radio jets of southern (declination south of - 30°) γ-ray bright AGN, simultaneously with Fermi/LAT monitoring of their γ-ray emission, via high-resolution radio imaging with Very Long Baseline Interferometry techniques. We present the radio and γ-rayproperties of the TANAMI sources based on one year of contemporaneous TANAMI and Fermi/LAT data. A large fraction (72%) of the TANAMI sample can be associated with bright γ-ray sources for this time range. Association rates differ for different optical classes with all BL Lacs, 76% of quasars, and just 17% of galaxies detected by the LAT. Upper limits were established on the γ-ray flux from TANAMI sources not detected by LAT. This analysis led to the identification of three new Fermi sources whose detection was later confirmed. The γ-ray and radio luminosities are related by L ∞ L . The brightness temperatures of the radio cores increase with the average γ-ray luminosity and the presence of brightness temperatures above the inverse Compton limit implies strong Doppler boosting in those sources. The undetected sources have lower γ/radio luminosity ratios and lower contemporaneous brightness temperatures. Unless the Fermi/LAT-undetected blazars are much γ-ray-fainter than the Fermi/LAT-detected sources, their γ-ray luminosity should not be significantly lower than the upper limits calculated here.

Authors with CRIS profile

Involved external institutions

Max-Planck-Institut für Radioastronomie / Max Planck Institute for Radio Astronomy Germany (DE) Commonwealth Scientific and Industrial Research Organisation (CSIRO) Australia (AU) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) Swinburne University of Technology Australia (AU) National Aeronautics and Space Administration (NASA) United States (USA) (US) University of New Mexico (UNM) / Universidad de Nuevo México United States (USA) (US) Hartebeesthoek Radio Astronomy Observatory (HartRAO) South Africa (ZA) Roque de los Muchachos Observatory / Observatorio del Roque de los Muchachos (ORM) Spain (ES) Bundesamt für Kartographie und Geodäsie (BKG) / Federal Agency for Cartography and Geodesy Germany (DE) California Institute of Technology (Caltech) United States (USA) (US) Université Bordeaux 1, Sciences et Technologies France (FR) University of Tasmania (UTAS) Australia (AU) Purdue-University United States (USA) (US) Italian Space Agency / Agenzia Spaziale Italiana (ASI) Italy (IT) Catholic University of America United States (USA) (US) University of Washington United States (USA) (US) Università degli Studi di Perugia Italy (IT) Julius-Maximilians-Universität Würzburg Germany (DE)

How to cite

APA:

Boeck, M., Kadler, M., Müller, C., Tosti, G., Ojha, R., Wilms, J.,... Zensus, J.A. (2016). Radio and gamma-ray properties of extragalactic jets from the TANAMI sample. Astronomy & Astrophysics, 590. https://doi.org/10.1051/0004-6361/201424773

MLA:

Boeck, M., et al. "Radio and gamma-ray properties of extragalactic jets from the TANAMI sample." Astronomy & Astrophysics 590 (2016).

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