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 »
- Authors:
- more »
- 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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