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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2023 Sep 10 1244 UTC

SIDC Předpověď

Sluneční erupce

C-class flares expected, (probability >=50%)

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
10 Sep 2023	160	006
11 Sep 2023	156	007
12 Sep 2023	150	007

Slunečně aktivní oblasti a vzplanutí

During last 24 hours solar flaring activity has decreased and only a few C-class flares were reported. The strongest reported flare was GOES C8.3 flare which peaked at 01:55 UT on September 10. The flare originated from the Catania sunspot group 44 (NOAA AR 3423) which somewhat decreased in the complexity of its photospheric magnetic field and it has presently beta configuration. The EUV observations show that the flare was associated with the eruption, but as the coronagraph data are not yet available it is not possible to estimate if the associated CME will be Earth directed. More will be reported when data become available. All the numbered active regions have presently beta configuration of their photospheric magnetic field. We can expect C-class flares in the coming hours while isolated M-class flares are possible but not very probable.

Vyhazování koronální hmoty

Presently available observations do not show any Earth directed CME.

Koronální díra

Two narrow and elongated coronal holes started to cross the central meridian today, one at the Northern and another one at Southern solar hemisphere. The coronal hole at the Northern hemisphere has positive polarity and the one at Southern hemisphere is somewhat smaller and it has negative polarity. The solar wind associated with these coronal holes can be expected at Earth starting from the afternoon of September 13.

Solární bouře

Earth is still inside the slow solar wind with the solar wind plasma characteristics fluctuating very little during the last 24 hours. The solar wind velocity remained to be about 330 km/s and the interplanetary magnetic field magnitude is about 6 nT.

Geomagnetismus

During last 24 hours the geomagnetic conditions were quiet and we expect them to stay so in the coming hours.

Úrovně protonového toku

The greater than 10 MeV proton flux was at the background levels and we do not expect significant change in the coming hours.

Elektronové toky na geostacionární oběžné dráze

The greater than 2 MeV electron flux still fluctuates around the 1000 pfu threshold. The 24h electron fluence is at normal level. We do not expect significant change in the coming hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 191, na základě 20 stanic.

Solární indexy za 09 Sep 2023

Wolfovo číslo Catania	///
10cm sluneční tok	161
AK Chambon La Forêt	010
AK Wingst	009
Odhadovaný Ap	008
Odhadovaný mezinárodní počet slunečních skvrn	144 - Na základě 27 stanic

Souhrn významných událostí

Poskytuje Centrum pro analýzu dat o solárních vlivech© - SIDC - Zpracováno SpaceWeatherLive

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