magnetospheric multiscale mission
TRANSCRIPT
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Magnetospheric Multiscale
Mission
Austin Atkins
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Magnetic Reconnection
Magnetic topology isrearranged and magneticfeld energy is convertedinto particle kinetic (largescale ows) and thermal
energy.Seems to violate the!ro"en in u# condition o!highly conducting plasmas.
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$%servations & $ccurrences
'okomaks (!usion reactors)
Solar ares
Magnetosphere
Magnetic ynamo
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Solar lare *vidence
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+mportant ,uestions
-hat e#actly is happening in the diusion region/
0ow do feld lines reconnect in collisionless plasmas/
ro"en in u# 1 -hat2s changing/
'ime and length scales/
ensities and temperatures/ +s tur%ulence involved/
+s there a secondary mechanism %esides reconnection/
0ow to advance computer models/
Are there multiple reconnections/
0ow hard can it %e/
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Motivation
Much easier to e#plain to the scientifc community. 'hepu%lic3 not so much.
Magnetic reconnection and general M0 phenomena aresignifcant in solar activity and general space weather. Solar
ares and 4M*2s can have signifcant impacts on satellites3power grids etc.
5etter physics e6uals %etter technology.
7ltimately3 can we predict these solar events/
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MMS Mission 1 :lo%al?erspective
Send = satellites into or%it around theearth to make in Situ measurements atreconnection sites (diusion region).
'ravel as a care!ully oriented pack toprovide the frst < dimensional recording(mapping) o! the reconnectionenvironment.
4hange or%its (phases) using on%oardthrusters to increase apogee.
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MMS Mission@More details
aunch (*#pected March ;B9C 1 Atlas
D) = identical satellites each carrying;C identical instrument sensors.
'he = satellites will y in atetrahedral pattern to properlymeasure the environment in