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Aktuální sluneční data:
Pro
17.duben 2021 - 12:30 UT(GMT)
Mezinárodní číslo slunečních skvrn :
019
Sluneční záblesky : Quiet conditions (<50% probability of C-class flares)
Geomagnetická situace : Minor storm expected (A>=30 or K=5)
Sluneční protony : Quiet
Komentář : Solar activity remained at very low levels over the last 24 hours.
Three numbered sunspot groups are visible on the solar disk, namely Catania
86 (NOAA 2814), NOAA 2815 and NOAA 2016. All of them are classified as
magnetic type Beta and have shown low levels of activity with B-class
flaring. The flaring activity within the next 24 hours is expected to
remain low with 30% chance for C-class flares.
No Earth-directed coronal mass ejections (CMEs) were detected in the
available coronagraph imagery.
The greater than 10 MeV proton flux was at nominal levels in the past 24
hours and is expected to remain so in the next 24 hours. The greater than
2MeV electron flux remained under the 1000 pfu threshold and is expected to
show some enhancement. The 24h electron fluence was at nominal levels and
is expected to be at nominal to moderate levels in the next 24 hours.
Over the past 24 hours the solar wind parameters (ACE and DSCOVR) were
elevated with the arrival of the high speed stream (HSS) from the high-
latitude extension of the negative-polarity polar coronal hole. The total
magnetic field registered a magnitude of 13 nT with a minimum Bz of -11 nT.
The solar wind speed varied between 400 km/s and 610 km/s. The solar wind
speed is expected to remain elevated throughout April 17th.
Due to the HSS and prolonged intervals with negative Bz multiple periods
with minor geomagnetic storms were registered over the past 24 hours.
Unsettled to active geomagnetic conditions with more periods of minor
geomagnetic storms can be expected for the next 24 hours.
Předpověď sluneční aktivity pro období : April 16 - April 22, 2021
Poslední fotografie ze SOHO / SDO:
Různé barvy snímků prozrazují odlišné vlnové délky - každá
vlnová délka je vyzařována plynem o určité teplotě: oranžová: 80 000 °C,
modrá: 1 000 000 °C, zelená: 1 500 000 °C, hnědá: 2 500 000 °C.
He II/Si XI 30,4 nm
80 000 °C
EIT 304
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Fe IX/X 17,1 nm
1 000 000 °C
EIT 171
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Fe XII 19,5 nm
1 500 000 °C
EIT 195
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Fe XV 28,4 nm
2 500 000 °C
EIT 284
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SDO/HMI Continuum
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SDO/HMI Magnetogram
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LASCO C2
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LASCO C3
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