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| Paper: |
Magnetic Field Strength in Parsec-Scale Blazar Jets |
| Volume: |
427, Accretion and Ejection in AGN: a Global View |
| Page: |
207 |
| Authors: |
O’ Sullivan, S. P.; Gabuzda, D. C. |
| Abstract: |
We present magnetic field strength estimates from measurements of the frequency-dependent
shift of the parsec-scale radio core of four blazar jets using VLBA observations from 4.6–43 GHz. We find
field strengths of the order of 100’s of mG at 1 pc from the base of these jets. Extrapolation of
our results (B ∝ r–1, where r is the distance from the base of the jet)
to the jet launching regions leads to magnetic field strengths consistent with
those expected from theoretical simulations of magnetically powered jets. |
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