3 mm GMVA observations of total and polarized emission from blazar and radio galaxy core regions

DOI: 
10.3390/galaxies5040067
Publication date: 
06/11/2017
Main author: 
Casadio C.
IAA authors: 
Gómez, J.L.;Agudo, I.
Authors: 
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.
Journal: 
Galaxies
Publication type: 
Article
Volume: 
5
Number: 
67
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. © 2017 by the authors.

Database: 
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032179567&doi=10.3390%2fgalaxies5040067&partnerID=40&md5=cca7f269babfda73f4bc20be3d73ba8e
Keywords: 
Galaxies: active; Galaxies: jets; Techniques: high angular resolution