A Science Mission for QSAT Project: Study of FACs in the Polar and Equatorial Regions

Details A Science Mission for QSAT Project: Study of FACs in the Polar and Equatorial Regions A Science Mission for QSAT Project: Study of FACs in the Polar and Equatorial Regions

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009em%26p..104..181f&link_type=abstract

Earth, Moon, and Planets, Volume 104, Issue 1-4, pp. 181-187

Computer Science

Field-Aligned Currents, Polar, Equator, Small Satellite, Magnetometer, Plasma Probe

Scientific paper

Kyushu University, Kyushu Institute of Technology and Fukuoka Institute of Technology are now designing, developing and building a micro-satellite called “QSAT”. The primary objective of QSAT is understanding the mechanism of spacecraft charging, which can be achieved with the onboard magnetometer, high-frequency probe (HP) and Langmuir probe (LP). The magnetometer measures the magnetic field variations caused by field-aligned currents (FACs) in the polar and equatorial regions. Polar FACs are well understood, while equatorial FACs are not. The science goals are as follows: (1) to better understand FACs in the polar region, (2) to compare the FACs observed in orbit with ground-based MAGDAS observations, (3) to investigate spatial distribution of FACs in the equatorial region. FACs play a crucial role in the coupling between solar wind, magnetosphere and ionosphere in terms of energy transfer. Also if we understand the relationship between the space and ground-based FACs data, then we can conduct long-term study on the solar wind-magnetosphere-ionosphere coupling in the future by mainly using data from ground-based magnetometer arrays.

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