Jet Kinematics of AGNs at High Radio Frequencies

S.G. Jorstad; A.P. Marscher; M. Lister; A.M. Stirling; T.V. Cawthorne; J-L. Gomez; W.K. Gear; J. A. Stevens; E.I. Robson; P.S. Smith; J.R. Forster

Jet Kinematics of AGNs at High Radio Frequencies

S.G. Jorstad, A.P. Marscher, M. Lister, A.M. Stirling, T.V. Cawthorne, J-L. Gomez, W.K. Gear, J. A. Stevens, E.I. Robson, P.S. Smith, J.R. Forster

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

38 Downloads (Pure)

Abstract

We have completed a 3 yr program of polarization monitoring of 15 active galactic nuclei with the Very Long Baseline Array at 7 mm wavelength. At some epochs the images are accompanied by nearly simultaneous polarization measurements at 3 mm, 1.35/0.85 mm, and optical wavelengths. We determine apparent velocities in the jets of all sources in the sample. We suggest a new method to estimate Doppler factor of the jet components based on their VLBI properties. This allows us to derive the Lorentz factors and viewing angles of superluminal knots and opening angles of the jets.

Original language	English
Title of host publication	In: Procs of the Blazar Variability Workshop II: Entering the GLAST Era - ASP Conf Series 350
Publisher	Astronomical Society of the Pacific
Pages	149-154
ISBN (Print)	1-58381-218-0, 978-1-58381-284-6
Publication status	Published - 2006

Access to Document

901606.pdf

Cite this

Jorstad, S. G., Marscher, A. P., Lister, M., Stirling, A. M., Cawthorne, T. V., Gomez, J.-L., Gear, W. K., Stevens, J. A., Robson, E. I., Smith, P. S., & Forster, J. R. (2006). Jet Kinematics of AGNs at High Radio Frequencies. In In: Procs of the Blazar Variability Workshop II: Entering the GLAST Era - ASP Conf Series 350 (pp. 149-154). Astronomical Society of the Pacific.

@inproceedings{6813ddd0d33542f197b1d47010a4832e,

title = "Jet Kinematics of AGNs at High Radio Frequencies",

abstract = "We have completed a 3 yr program of polarization monitoring of 15 active galactic nuclei with the Very Long Baseline Array at 7 mm wavelength. At some epochs the images are accompanied by nearly simultaneous polarization measurements at 3 mm, 1.35/0.85 mm, and optical wavelengths. We determine apparent velocities in the jets of all sources in the sample. We suggest a new method to estimate Doppler factor of the jet components based on their VLBI properties. This allows us to derive the Lorentz factors and viewing angles of superluminal knots and opening angles of the jets.",

author = "S.G. Jorstad and A.P. Marscher and M. Lister and A.M. Stirling and T.V. Cawthorne and J-L. Gomez and W.K. Gear and Stevens, {J. A.} and E.I. Robson and P.S. Smith and J.R. Forster",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/348.html--Copyright Astronomical Society of the Pacific",

year = "2006",

language = "English",

isbn = "1-58381-218-0",

pages = "149--154",

booktitle = "In: Procs of the Blazar Variability Workshop II: Entering the GLAST Era - ASP Conf Series 350",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Jet Kinematics of AGNs at High Radio Frequencies

AU - Jorstad, S.G.

AU - Marscher, A.P.

AU - Lister, M.

AU - Stirling, A.M.

AU - Cawthorne, T.V.

AU - Gomez, J-L.

AU - Gear, W.K.

AU - Stevens, J. A.

AU - Robson, E.I.

AU - Smith, P.S.

AU - Forster, J.R.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/348.html--Copyright Astronomical Society of the Pacific

PY - 2006

Y1 - 2006

N2 - We have completed a 3 yr program of polarization monitoring of 15 active galactic nuclei with the Very Long Baseline Array at 7 mm wavelength. At some epochs the images are accompanied by nearly simultaneous polarization measurements at 3 mm, 1.35/0.85 mm, and optical wavelengths. We determine apparent velocities in the jets of all sources in the sample. We suggest a new method to estimate Doppler factor of the jet components based on their VLBI properties. This allows us to derive the Lorentz factors and viewing angles of superluminal knots and opening angles of the jets.

AB - We have completed a 3 yr program of polarization monitoring of 15 active galactic nuclei with the Very Long Baseline Array at 7 mm wavelength. At some epochs the images are accompanied by nearly simultaneous polarization measurements at 3 mm, 1.35/0.85 mm, and optical wavelengths. We determine apparent velocities in the jets of all sources in the sample. We suggest a new method to estimate Doppler factor of the jet components based on their VLBI properties. This allows us to derive the Lorentz factors and viewing angles of superluminal knots and opening angles of the jets.

M3 - Conference contribution

SN - 1-58381-218-0

SN - 978-1-58381-284-6

SP - 149

EP - 154

BT - In: Procs of the Blazar Variability Workshop II: Entering the GLAST Era - ASP Conf Series 350

PB - Astronomical Society of the Pacific

ER -

Jet Kinematics of AGNs at High Radio Frequencies

Abstract

Access to Document

Fingerprint

Cite this