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Volume 5
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10.3390/galaxies5040067
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Open AccessArticle

3 mm GMVA Observations of Total and Polarized Emission from Blazar and Radio Galaxy Core Regions

by
Carolina Casadio
1,*,
Thomas P. Krichbaum
1,
Alan P. Marscher
2,
Svetlana G. Jorstad
2,3,
José L. Gómez
4,
Iván Agudo
4,
Uwe Bach
1,
Jae-Young Kim
1,
Jeffrey A. Hodgson
5 and
Anton J. Zensus
1
1
Max-Planck-Institut für Radioastronomie, Auf dem Hügel, 69, D-53121 Bonn, Germany
2
Institute for Astrophysical Research, Boston University, Boston, MA 02215, USA
3
Astronomical Institute, St. Petersburg State University, St. Petersburg 199034, Russia
4
Instituto de Astrofísica de Andalucía, CSIC, Apartado 3004, E-18080 Granada, Spain
5
Korea Astronomy and Space Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Emilio Elizalde
Galaxies 2017, 5(4), 67; https://doi.org/10.3390/galaxies5040067
Received: 13 September 2017 / Revised: 12 October 2017 / Accepted: 13 October 2017 / Published: 18 October 2017
(This article belongs to the Special Issue Polarised Emission from Astrophysical Jets)
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Abstract

We present total and linearly polarized 3 mm Global mm-VLBI Array (GMVA; mm-VLBI: Very Long Baseline Interferometry observations at millimetre wavelengths) images of a sample of blazars and radio galaxies from the VLBA-BU-BLAZAR 7 mm monitoring program designed to probe the innermost regions of active galactic nuclei (AGN) jets and locate the sites of gamma-ray emission observed by the Fermi-LAT. The lower opacity at 3 mm and improved angular resolution—on the order of 50 microarcseconds—allow us to distinguish features in the jet not visible in the 7 mm VLBA data. We also compare two different methods used for the calibration of instrumental polarisation and we analyze the resulting images for some of the sources in the sample. View Full-Text
Keywords: galaxies: active; galaxies: jets; techniques: high angular resolution galaxies: active; galaxies: jets; techniques: high angular resolution
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
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MDPI and ACS Style

Casadio, C.; Krichbaum, T.P.; Marscher, A.P.; Jorstad, S.G.; Gómez, J.L.; Agudo, I.; Bach, U.; Kim, J.-Y.; Hodgson, J.A.; Zensus, A.J. 3 mm GMVA Observations of Total and Polarized Emission from Blazar and Radio Galaxy Core Regions. Galaxies 2017, 5, 67. https://doi.org/10.3390/galaxies5040067

AMA Style

Casadio C, Krichbaum TP, Marscher AP, Jorstad SG, Gómez JL, Agudo I, Bach U, Kim J-Y, Hodgson JA, Zensus AJ. 3 mm GMVA Observations of Total and Polarized Emission from Blazar and Radio Galaxy Core Regions. Galaxies. 2017; 5(4):67. https://doi.org/10.3390/galaxies5040067

Chicago/Turabian Style

Casadio, Carolina; Krichbaum, Thomas P.; Marscher, Alan P.; Jorstad, Svetlana G.; Gómez, José L.; Agudo, Iván; Bach, Uwe; Kim, Jae-Young; Hodgson, Jeffrey A.; Zensus, Anton J. 2017. "3 mm GMVA Observations of Total and Polarized Emission from Blazar and Radio Galaxy Core Regions" Galaxies 5, no. 4: 67. https://doi.org/10.3390/galaxies5040067

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