The jet of the Low Luminosity AGN of M81. Evidence of Precession
Paper in proceeding, 2013
In this contribution, we summarize our main results of a big campaign of global VLBI observations of the AGN in M81 (M81*) phase-referenced to the radio supernova SN 1993J. Thanks to the precise multi-epoch and multi-frequency astrometry, we have determined the normalized core-shift of the relativistic jet of M81* and estimated both the magnetic field and the particle density at the jet base. We have also found evidence of jet precession in M81* coming from the systematic time evolution of the jet orientation correlated with changes in the overall flux density.
Author
Antxon Alberdi
Institute of Astrophysics of Andalusia (IAA)
Ivan Marti-Vidal
Chalmers, Earth and Space Sciences, Onsala Space Observatory
J. M. Marcaide
Universitat de Valencia
J. C. Guirado
Universitat de Valencia
Miguel Angel Perez-Torres
Institute of Astrophysics of Andalusia (IAA)
Eduardo Ros
Max Planck Society
Universitat de Valencia
Andreas Brunthaler
Max Planck Society
EPJ Web of Conferences
21016275 (ISSN) 2100014X (eISSN)
Vol. 61 08002
International Symposium on the Innermost Regions of Relativistic Jets and Their Magnetic Fields
Granada, Spain,
Granada, Spain,
Subject Categories
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
Infrastructure
Onsala Space Observatory
DOI
10.1051/epjconf/20136108002