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Słońce z SDO 06.11.2021

: 6 lis 2021, o 22:34
autor: tafig
Pogoda w Polsce dzisiaj nie sprzyja obserwacjom Słońca, więc sprawdzamy co nowego na Słońcu. Od dwóch dni na Słońcu rozwija się nowa grupa o numerze 2894. Grupa z trzema plamami, główna otoczona symetrycznym półcieniem i dwie mniejsze. Wokół nich widać na zdjęciu kilka włóknistych pochodni. Na środku tarczy obecnie znajduje się pojedyncza grupa z symetrycznym półcieniem 2893. Grupa 2891, która wywołała burzę magnetyczną jest już przy brzegu zachodniej tarczy w zaniku. na zdjęciu widać jedną plamkę bez półcienia.

This beauty of an image was captured very early Thursday morning by Dar and Tree Tanner (TeamTanner) from Alix, Alberta, Canada

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Przewiduje się, że w ciągu 24 godzin może dojść do rozbłysków klasy C z grupy 2894, która na początku była grupa jednobiegunową a dzisiaj wydaje się być grupą dwubiegunową.

COMMENT: The new region on disc, NOAA region 2894, produced the strongest
flare of the period, a C2.3 flare peaking at 21:57UT. As it is rotating
further onto the disc it now shows to be bipolar with some small trailing
spots.
The spots of NOAA region 2891 have shrunk significantly and seem about to
disappear completely, while the region did produce a low C flare in the
period.
NOAA region 2893 remained quiet.
It remains likely that some C flaring will occur in the coming 24 hours.

No Earth directed CMEs have been recorded in coronagraph data.

The more than 10MeV proton flux was at background values and is expected to
remain at background values.
The greater than 2 MeV electron flux reached briefly above the 1000 pfu
threshold during the diurnal maximum and is likely to do so again today.
The 24h electron fluence remained at normal levels but is expected to be at
normal to moderate or even high levels with the continued elevated Solar
wind conditions.

Solar wind speed remained elevated in the wake of the CME. It decreased
from 600km/s at the start of the period to around 500km/s, but saw again a
peak of over 600km/s this morning. The interplanetary magnetic field showed
a similar pattern, decreasing from 10nT to under 5nT but with again a peak
over 10nT around midnight. The magnetic field orientation was variable and
without sustained periods of any strong southward component.
Solar wind conditions are expected to first continue to decrease but they
may become slightly elevated again from late tomorrow November 7 or early
November 8 due to possible weak high speed stream influences related to a
small positive polarity equatorial coronal hole.

Geomagnetic conditions were quiet to active (NOAA Kp 3-4 and local K
Dourbes 2-4).
Geomagnetic conditions are expected to be mostly quiet to unsettled over
the next days.
TODAY'S ESTIMATED ISN : 034, BASED ON 12 STATIONS.