Solar Physics

, Volume 141, Issue 1, pp 65–73 | Cite as

The relationship between the longitudinal magnetic field and the line-of-sight velocity at different angular positions of sunspots

  • A. A. Pevtsov


Using observational data on 14 sunspots from the Sayan Observatory vector magnetograph, a study was made of the relationship between the sunspot magnetic field and the Evershed motions. It is shown that the central area of the solar disk is dominated by an anti-correlation of the longitudinal magnetic field B and the line-of-sight velocity V when a maximum of V corresponds to the neutral line of the longitudinal field. Near the limb there usually is a coincidence of the field and velocity neutral lines. There is evidence for the possible asymmetric character of the effect with respect to the central meridian.


Magnetic Field Observational Data Central Area Velocity Versus Angular Position 
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Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • A. A. Pevtsov
    • 1
  1. 1.Siberian Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (SibIZMIR), Russian Academy of Sciences, Siberian BranchIrkutskRussia

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