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Astron. Astrophys. 352, 317-320 (1999)

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Different magnetic features between solar polar and equatorial magnetic fields

M. Zhang and H.Q. Zhang

1 Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, P.R. China
2 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P.R. China

Received 22 January 1999 / Accepted 5 August 1999

Abstract

Solar polar and equatorial photospheric (FeI[FORMULA]5324.19 Å line) magnetic fields have been observed using the vector video magnetograph at Huairou Solar Observing Station of Beijing Astronomical Observatory.

It is found from our observations that the magnetic fields of small-scale magnetic features near the solar poles are stronger than in quiet equatorial regions near the limb, and that strong polar magnetic elements appear to have the same magnetic polarity as the general large-scale polar magnetic field, which is in agreement with previous results by Homann et al. (1997) and Zhang et al. (1997). It is also found from our observations that there are more opposite polarity magnetic pairs near the solar poles than in quiet equatorial regions near the limb.

Key words: Sun: magnetic fields – Sun: photosphere

Send offprint requests to: M. Zhang

Correspondence to: zhm@sun10.bao.ac.cn

This article contains no SIMBAD objects.

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© European Southern Observatory (ESO) 1999

Online publication: November 23, 1999
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