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The jet of the Low Luminosity AGN of M81. Evidence of Precession

Antxon Alberdi ; Ivan Marti-Vidal (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; Marcaide Jon ; Jose Carlos Guirado ; Miguel Angel Perez-Torres ; Eduardo Ros ; Andreas Brunthaler
EPJ Web of Conferences: International Symposium on Innermost Regions of Relativistic Jets and their Magnetic Field (2100-014X). Vol. 61 (2013),
[Konferensbidrag, övrigt]

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.

Denna post skapades 2014-01-10. Senast ändrad 2015-03-30.
CPL Pubid: 192066


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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium (2010-2017)


Astronomi, astrofysik och kosmologi

Chalmers infrastruktur

Onsala rymdobservatorium