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Submitted on 2004-03-01
Sunspot group 67 launched an X1.1 flare.
Submitted on 2004-02-16
The Sun veiled itself in silence: no flares, low solar wind speed, descending 10cm Flux. On Earth, we are experiencing quiet geomagnetic conditions. Although, a large prominence is visible in EIT imagery and might be blown off. The movie below shows the evolution in time of the prominence. From February 14 onwards, we see an agile, spiral shaped black structure in the upper left corner.
Submitted on 2004-02-12
In GOES-12 SXI imagery we can detect an active region with a peculiar form. Is it a glimpse of the private life of the Sun?
Submitted on 2004-01-29
No spots were visible on the solar disk on January 28. The 10cm flux is crashing to a very low level.
Submitted on 2004-01-21
The first prominence, situated at the left (east) of the central meridian, erupted on 21 January. This led to a nice view in EIT 195 (see figure and movie underneath). At this time we already could predict the outburst of a second prominence, situated on the right edge (west limb) of the Sun. The small turbulent motions inside the prominence revealed the future activity.
What is a prominence? ... and a filament?
Submitted on 2004-01-06
A few days in the months October and November 2003, the daily sunspot number was tremendously high. This seems unusual since we are in the declining phase of the solar cycle.
Submitted on 2003-12-20
Since the official start in the magical year 2000 of the SIDC as a Regional Warning Center, our team developed many visualisation tools helping the forecasters doing their job. Click on the icons to find out more.
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Submitted on 2003-12-15
The goal is to assess in near real-time and to forecast the influence of Space Weather and ionospheric conditions on the precision of GPS applications.
People try to determine their position already since millennia. In historic times, the stars were used as guides. Now we have another tool, namely GPS: Global Positioning System. Both systems have one common fact: both are space-borne in the sense that stars live there and GPS has man-made stars: satellites flying around over there.
Submitted on 2003-11-20
On November 20, polar light was visible, even at low latitudes!
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