Semi-empirical modelling of sunspots magnetic fields on the basis of radio astronomical and magnetographic observations

Details Semi-empirical modelling of sunspots magnetic fields on the basis of radio astronomical and magnetographic observations Semi-empirical modelling of sunspots magnetic fields on the basis of radio astronomical and magnetographic observations

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.505..433k&link_type=abstract

In: SOLMAG 2002. Proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference and IAU Colloquium 188, 11 - 15 Jun

Astronomy and Astrophysics

Astronomy

1

Sunspots, Magnetic Fields, Radio Observations

Scientific paper

A semi-empirical method to model spatial configurations of sunspot magnetic fields is presented and discussed. To calculate the strength and diversity of the magnetic fields in the chromosphere-corona transition region (CCTR), radio astronomy and magnetographic observations are used. Multifrequency radio observations with RATAN-600 allow to measure magnetic fields above sunspots using a method described in (Akhmedov, et al. 1982). Our model calculations confirm that the measured value is the maximum magnetic field of the sunspot at the height of the CCTR. Two-dimensional maps of the longitudinal component of sunspot magnetic fields at the photospheric level produced with Ondrejov magnetograph (Czech Republic) along with the magnetic field strength measured in the corona with RATAN-600 are used for calculations of the strength and diversity of the magnetic field and for the estimate of the height of the CCTR above sunspots.

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