Vaata pühapäev, 10 september 2023 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2023 Sep 10 1244 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

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

Päikese aktiivsed piirkonnad ja pursked

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.

Krooniaine massiline väljavool

Presently available observations do not show any Earth directed CME.

Krooniauk

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.

Päikesetuul

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.

Geomagnetism

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

Prootoni voo tasemed

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

Elektronivoog geostatsionaarsel orbiidil

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.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 191, põhineb 20 jaamadel.

Päikese indeksid 09 Sep 2023

Catania Wolfi number	///
10cm päikesevoog	161
AK Chambon La Forêt	010
AK Wingst	009
Hinnanguline Ap	008
Hinnanguline rahvusvaheline päikeselaikude arv	144 - Põhineb 27 jaamal

Märkimisväärsete sündmuste kokkuvõte

Andmed on esitanud Päikeseinfektide Andmeanalüüsi Keskus (Solar Influences Data Analysis Center)© - SIDC - Töötleb SpaceWeatherLive

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