Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sssmp..29..199h&link_type=abstract
Scientia Sinica, Series A - Mathematical, Physical, Astronomical and Technical Sciences (ISSN 0253-5831), vol. 29, Feb. 1986, p.
Astronomy and Astrophysics
Astronomy
3
Magnetic Flux, Solar Activity, Solar Corona, Solar Magnetic Field, Current Sheets, Magnetic Field Configurations, Magnetic Field Reconnection
Scientific paper
The role of magnetic-field eruptions in the formation and acceleration of high-density transient loops in the solar corona is investigated theoretically, applying the line-magnetic-charge model of Hu (1983) in a quasi-static approximation valid for the lower corona. An eruption of magnetic flux under a bipolar background field is shown to produce an expanding arched neutral current sheet, the sheet velocity and height depending on the rate and amplitude of the dipole-moment ratio increase. The motion of current sheets during flux eruption and magnetic reconnection is analyzed and illustrated with graphs, and similarities between the shape of the expanding sheet and observations of loop transients are indicated.
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