Auf der Sonne kommt wohl wieder was rum...?!

[hobbyastronom]

Hallo,

soeben betrachtete ich das Continuum-Foto von SOHO und kann mich des Eindrucks nicht erwehren, daß haarscharf am linken Rand wieder was erscheint, offenbar was größeres. Eine kleine schwarze Delle ist zu sehen. Mal schauen....

Widme mich nun wieder Wetterbeobachtungen. Hier in Freital bei Dresden immer noch 23° (22:37) und bis jetzt kein einziger Tropfen Regen...

Heiko U.

[Bernhard Dorner]

Hallo Heiko,

da schaun ein paar Überbleibsel wieder vorbei; hierzu ein AstroAlert von gestern:

A s t r o A l e r t
Sun-Earth Alert

Solar Terrestrial Dispatch
http://www.spacew.com

12 August 2004

LARGE SUNSPOT VISIBLE TO THE UNAIDED EYE

Another large sunspot group has formed (numbered as Region 10656). It is
currently easily visible to the unaided (but protected) eye. Although it is not particularly complex, it does have some potential to
produce an isolated major flare.

A coronal mass ejection associated with minor solar activity in this
region late on 10 August has the potential to enhance auroral activity on 13
and/or 14 August. A middle latitude auroral activity watch may be issued for
this event.

The return of old active Region 10652, which was responsible for some
strong auroral activity during its last solar rotation, is due to return to
the solar limb over the next 24 to 72 hours. Solar observers with h-alpha
filters may observe some east-limb activity (surging) if it returns. The
National Solar Observatory reported observing moderately strong Ca XV
coronal emissions a few days ago in the vicinity of this returning active
region. Ca XV is formed at temperatures near 3 million degrees and often
accompanies active regions with a stronger potential to produce energetic
solar flares. Given that the emissions observed recently are much weaker than
when Region 10652 departed the west limb two weeks ago, it is probable that
this region has experienced some (perhaps moderate) decay. We will know for
certain when it reappears.


** End of Astroalert **

Zu der 656 und CME weiß ich aber nichts näheres.

Ciao
Bernhard

[Martin Hörenz]

Konnte heute früh eine neue Gruppe mit zwei schönen Penumbraflecken am Ostrand beoabchten. Dürfte 10652 (jetzt 10661) sein.

Gruß,
Martin