reconnection - Plasma Physics at West Virginia University

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Observational Evidence• Ramification of reconnection on the dayside isconvection pattern at the polar caps(Dungey, PRL, 1961)– Flows had been observed with ground basedmagnetometers, but attributed to viscosityDungey, 1961• Indirect evidence of reconnection model– Direction of IMF correlated withauroral and geomagnetic activity(Fairfield and Cahill Jr., JGR, 1966)– Southward IMF implies magnetopauseerosion (Aubry et al., JGR, 1970)– Energetic particles from the sun reachthe field lines at the polar cap first(Fennell, JGR, 1973)• Direct evidence (ISEE measurements)– Plasma acceleration at a rotationaldiscontinuity (Paschmann et al., Nature, 1979)– Non-zero component of B field normal tothe magnetopause (Sonnerup et al., JGR, 1981)Overwhelming evidence formagnetospheric reconnection!Made using BATS-R-US @ CCMC10
Outline• Early History of Magnetic Reconnection– 1930s through 1981• Middle History of Magnetic Reconnection– 1979 through 2001• Recent History of Magnetic Reconnection– Magnetospheric Applications, 2000 - present• The Future11
Page 1 and 2: Theory of Magnetic Reconnectionfor
Page 3 and 4: Magnetic Reconnection• An ISI sea
Page 9: Harry Petschek• An aeronautical e
Page 13 and 14: The GEM Reconnection Challenge• H
Page 15 and 16: Outline• Early History of Magneti
Page 17 and 18: Recent Developments• Borovsky and
Page 19 and 20: The Borovsky Coupling Function• S
Page 21 and 22: Signatures and Microphysics• Obse
Page 23 and 24: M’Tail - Dipolarization Fronts•
Page 26 and 27: Near Future - MMS Mission• Magnet
Page 28: Conclusion• “So the physics of

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