news
Submitted on 2004-04-29
The SOHO team announced on April 27, 2004 at 21:00 UT that SOHO is back in normal mode. The satellite can continue its scientific mission. This is indeed a great relief for us, forecasters. Underneath the first EIT-movies made since the satellite is again in normal mode.
EIT 171
Submitted on 2004-04-23
The EIT-telescope as well as LASCO have become temporarily blind. An onboard computer remarked a virtual malfunction and ordered the satellite to go into the 'safe' mode in which only vital functions are kept alive.
Newsflash broadcast on the SOHO-webpage on April 21, 2004
"... SOHO entered ESR (safe) mode at 05:37 UT. The ESR was triggered by the FSPAAD (Fine Sun Pointing Attitude Anomaly Detector)."
Submitted on 2004-04-02
On March 24 and 25, two M-flares were registered from an active region still behind the east limb. First visible in SOHO/MDI on March 25, 16:06 the group seemed to have a promising flaring future. It fell short of our expectations. But, on March 31, the giant woke up and produced a long duration event continuing for more than 24 hours!
Submitted on 2004-03-18
Last week, a large coronal hole played the leading part in the space weather news, just as it also did 27 days ago.
Submitted on 2004-03-08
Since 1998, shutterless EIT campaigns led by the SIDC, were run to spot particular solar events. "Small scale" - "short time variations" are two of the key words of these campaigns. The last shutterless campaign was held on February 18 and 25, 2004.
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?
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