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Multi-wavelength polarimetry and variability study of the M87 jet

Published online by Cambridge University Press:  24 March 2015

Sayali S. Avachat ,
Eric S. Perlman ,
William B Sparks ,
Mihai Cara  and
Frazer N. Owen
Sayali S. Avachat
Affiliation:
Department of Physics and Space Sciences, Florida Institute of Technology, 150 W University Blvd, Melbourne, FL 32901, USA
Eric S. Perlman
Affiliation:
Department of Physics and Space Sciences, Florida Institute of Technology, 150 W University Blvd, Melbourne, FL 32901, USA
William B Sparks
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Mihai Cara
Affiliation:
Department of Physics and Space Sciences, Florida Institute of Technology, 150 W University Blvd, Melbourne, FL 32901, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Frazer N. Owen
Affiliation:
National Radio Astronomy Observatory, Array Operations Center, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801-0387, USA
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Abstract

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We present a high resolution polarimetry and variability study of the M87 jet using VLA and HST data taken during 2002 to 2008. Both data-sets have an angular resolution as high as 0.06”, which is 2-3 times better than previous observations. New morphological details are revealed in both the optical and radio, which can help to reveal the energetic and magnetic field structure of the jet. By comparing the data with previously published HST and VLA observations, we show that the jet's morphology in total and polarized light is changing significantly on timescales of ~1 decade. We compare the evolution of the inner jet (particularly the nucleus and knot HST-1), when our observations overlap with the multi-wavelength monitoring campaigns conducted with HST and Chandra. We use these data to comment on particle acceleration and main emission processes.

Keywords

galaxies: activegalaxies: individual (M87)galaxies: jetsgalaxies: nuclei
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S313: Extragalactic jets from every angle , September 2014 , pp. 116 - 121
Copyright
Copyright © International Astronomical Union 2015 

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