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

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. In this paper, 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 Lγ ∝ Lr0.89±0.04. 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. Finally, unless the Fermi/LAT-undetected blazars are much γ-ray-fainter than the Fermi/LAT-detected sources,more » their γ-ray luminosity should not be significantly lower than the upper limits calculated here.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA); Federal Ministry for Economic Affairs and Energy (BMWi) (Germany); Ministry of Economy, Industry and Competitiveness (MINECO) (Spain); Generalitat Valenciana; European Cooperation in Science and Technology (COST) (Belgium)
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1355699
Grant/Contract Number:  
AC02-76SF00515; NNH09ZDA001N; NNH10ZDA001N; 50OR0808; AYA2009-13036-C02-C02; AYA2012-38491-C02-01; Prometeo 2009/104; MP0905
Resource Type:
Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 590; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: active; galaxies: nuclei; galaxies: jets; gamma rays: galaxies; radio continuum: galaxies

Citation Formats

Böck, M., Kadler, M., Müller, C., Tosti, G., Ojha, R., Wilms, J., Bastieri, D., Burnett, T., Carpenter, B., Cavazzuti, E., Dutka, M., Blanchard, J., Edwards, P. G., Hase, H., Horiuchi, S., Jauncey, D. L., Krauß, F., Lister, M. L., Lovell, J. E. J., Lott, B., Murphy, D. W., Phillips, C., Plötz, C., Pursimo, T., Quick, J., Ros, E., Taylor, G., Thompson, D. J., Tingay, S. J., Tzioumis, A., and Zensus, J. A. Radio and gamma-ray properties of extragalactic jets from the TANAMI sample. United States: N. p., 2016. Web. doi:10.1051/0004-6361/201424773.
Böck, M., Kadler, M., Müller, C., Tosti, G., Ojha, R., Wilms, J., Bastieri, D., Burnett, T., Carpenter, B., Cavazzuti, E., Dutka, M., Blanchard, J., Edwards, P. G., Hase, H., Horiuchi, S., Jauncey, D. L., Krauß, F., Lister, M. L., Lovell, J. E. J., Lott, B., Murphy, D. W., Phillips, C., Plötz, C., Pursimo, T., Quick, J., Ros, E., Taylor, G., Thompson, D. J., Tingay, S. J., Tzioumis, A., & Zensus, J. A. Radio and gamma-ray properties of extragalactic jets from the TANAMI sample. United States. doi:10.1051/0004-6361/201424773.
Böck, M., Kadler, M., Müller, C., Tosti, G., Ojha, R., Wilms, J., Bastieri, D., Burnett, T., Carpenter, B., Cavazzuti, E., Dutka, M., Blanchard, J., Edwards, P. G., Hase, H., Horiuchi, S., Jauncey, D. L., Krauß, F., Lister, M. L., Lovell, J. E. J., Lott, B., Murphy, D. W., Phillips, C., Plötz, C., Pursimo, T., Quick, J., Ros, E., Taylor, G., Thompson, D. J., Tingay, S. J., Tzioumis, A., and Zensus, J. A. Wed . "Radio and gamma-ray properties of extragalactic jets from the TANAMI sample". United States. doi:10.1051/0004-6361/201424773. https://www.osti.gov/servlets/purl/1355699.
@article{osti_1355699,
title = {Radio and gamma-ray properties of extragalactic jets from the TANAMI sample},
author = {Böck, M. and Kadler, M. and Müller, C. and Tosti, G. and Ojha, R. and Wilms, J. and Bastieri, D. and Burnett, T. and Carpenter, B. and Cavazzuti, E. and Dutka, M. and Blanchard, J. and Edwards, P. G. and Hase, H. and Horiuchi, S. and Jauncey, D. L. and Krauß, F. and Lister, M. L. and Lovell, J. E. J. and Lott, B. and Murphy, D. W. and Phillips, C. and Plötz, C. and Pursimo, T. and Quick, J. and Ros, E. and Taylor, G. and Thompson, D. J. and Tingay, S. J. and Tzioumis, A. and Zensus, J. A.},
abstractNote = {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. In this paper, 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 Lγ ∝ Lr0.89±0.04. 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. Finally, 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.},
doi = {10.1051/0004-6361/201424773},
journal = {Astronomy and Astrophysics},
number = ,
volume = 590,
place = {United States},
year = {2016},
month = {5}
}

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    Works referencing / citing this record:

    TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry: II. Additional sources
    journal, February 2018


    The TANAMI Multiwavelength Program: Dynamic spectral energy distributions of southern blazars
    journal, June 2016


    The TANAMI Multiwavelength Program: Dynamic spectral energy distributions of southern blazars
    journal, June 2016


    TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry: II. Additional sources
    journal, February 2018