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08:33 PM
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The solar wind is currently almost non existent
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[quote:Anonymous Coward 832516:MV85MzY0OTZfMTQ1MjQ1OThfOTY4QTBEQ0Q=] It probably accounts for the rise in Cosmic Rays we've been seeing. I think it's going to get cold... Sun is extremely quiet. [/quote]
Original Message
PRESTO FROM SIDC - RWC BELGIUM Thu Dec 3 2009, 1247 UT
Except for a small magnetic dipole just passing the East limb in Extreme-UV images (probably a plage without sunspots), the Sun is featureless and is expected to remain inactive. Since early today, the solar wind has virtually vanished, reaching exceptionally low speeds (now at 250 km/s), low densities (< 0.1 electron/cm3) and low plasma temperatures (< 10⁴ K), based on ACE and SOHO/MTOF data. This leads also to exceptionally quiet geomagnetic conditions (Kp=0 at many ground stations). Those extremely quiet conditions certainly deserve special study. Only a weak solar wind stream expected tomorrow or on Dec.5 could restore more normal conditions, but just inducing temporarily unsettled geomagnetic conditions.
[
link to sidc.oma.be
]
[
link to www.swpc.noaa.gov
]
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