A Method for Determining Magnetic Helicity of Solar Active Regions from SOHO/MDI Magnetograms

Details A Method for Determining Magnetic Helicity of Solar Active Regions from SOHO/MDI Magnetograms A Method for Determining Magnetic Helicity of Solar Active Regions from SOHO/MDI Magnetograms

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38..295c&link_type=abstract

Journal of the Korean Astronomical Society, vol. 38, no. 2, pp. 295-298

Astronomy and Astrophysics

Astronomy

16

Sun: Magnetic Field, Sun: Photosphere, Sun: Active Regions

Scientific paper

Recently a big progress has been made on the measurements of magnetic helicity of solar active regions based on photospheric magnetograms . In this paper, we present the details of Chae's method of determining the rate of helicity transfer using line-of-sight magnetograms such as taken by SOHO/MDI. The method is specifically applied to full-disk magnetograms that are routinely taken at 96-minute cadence.

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