Computer Science
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sunge...2...39d&link_type=abstract
Sun and Geosphere, vol.2, no. 1, p. 39-42.
Computer Science
1
Scientific paper
The large-scale field-aligned currents (FACs) are well examined experimentally and described by different models, but the small scale FACs are less investigated and there exists a controversy about their intensity and dimensions. A possible source for the discrepancy is the assumption of infinite homogeneous current sheet which allowed their deriving from one-satellite measurements. We present a new method for identification of finite size current sheets, which we applied to derive FACs from magnetic field measurements aboard the INTERCOSMOS BULGARIA-1300 satellite. Then we compare one case of FAC, detected on 22 August 1981, with empirical (Tsyganenko 2001) and a magneto-hydrodynamic Block-Adaptive-Tree-Solar-wind-Roe-Upwind-Scheme (BATS-R-US) model of large-scale currents. We discuss the possible reasons for the observed discrepancy between the measured and modelled FACs.
Danov Dimitar
Koleva R.
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