Parsec-Scale Blazar Monitoring: The Data

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Ojha_2004_ApJS_150_187.pdf (4.01 MB)

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https://iopscience.iop.org/article/10.1086/379662

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https://doi.org/10.1086%2F379662
 http://hdl.handle.net/11603/18236
 https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Search&refcode=2004ApJS..150..187O
 http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2004ApJS..150..187O

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UMBC Physics Department
UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)

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Date

2004-01-01

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journal articles
text

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Citation of Original Publication

Roopesh Ojha, Daniel C. Homan, David H. Roberts,John F. C. Wardle,Margo F. Aller, Hugh D. Aller, Philip A. Hughes, Parsec-Scale Blazar Monitoring: The Data, The Astrophysical Journal, Volume 150, Number 1, https://doi.org/10.1086%2F379662

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© 2004. The American Astronomical Society. All rights reserved.

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Abstract

We present the images and modeling data obtained from a dual frequency, six-epoch, VLBA polarization experiment monitoring a sample of 12 blazars. The observations were made at 15 and 22 GHz at evenly spaced, bimonthly intervals over 1996. The advent of the VLBA makes possible a data set with reliable calibration as well as regular and frequent temporal sampling. Detection of circular polarization, proper motion studies, and flux and polarization variability in the sample are some of the topics that such a data set makes available for robust investigation.