Vaata laupäev, 27 juuli 2013 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2013 Jul 27 1348 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

	10 cm vool	Ap
27 Jul 2013	112	013
28 Jul 2013	114	003
29 Jul 2013	115	004

Bülletään

Catania sunspot group 35 (NOAA AR 1800) keeps the beta-gamma configuration of its photospheric magnetic field. It produced several weak C-class flares in the last 12 hours. We expect more C-class flares from this active region, with M-class flares possible but very unlikely. A partial halo CME (angular width around 135 degrees, principal angle 215 degrees) was detected by SOHO/LASCO yesterday first appearing in the LASCO C2 field of view at 18:36 UT. It was accompanied by the C1.5 flare peaking at 19:28 UT situated just behind the south-west limb (a post-eruption arcade was detected by SDO/AIA). The CME speed was around 500 km/s according to the CACTus software. Due to the CME source region position behind the limb, we do not expect the CME-associated interplanetary disturbance to arrive at the Earth. SDO/AIA observed a filament eruption accompanied by coronal dimmings and a post-eruption arcade in a bipolar magnetic region situated between Catania sunspot groups 35 and 44 (NOAA ARs 1800 and 1805). It was associated with the C1.8 flare peaking at 21:49 UT yesterday. There is no indication in the SOHO/LASCO and STEREO/COR data that this eruption was accompanied by a CME. The Earth is currently inside the trailing part of the fast solar wind stream. The wind speed is around 440 km/s and the interplanetary magnetic field magnitude is around 5-6 nT. Although Dourbes reported an interval of active geomagnetic conditions earlier today (K = 4 between 6 and 9 UT) in response to the passage of the fast flow, we expect quiet to unsettled geomagnetic conditions in the coming hours.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 049, põhineb 07 jaamadel.

Päikese indeksid 26 Jul 2013

Catania Wolfi number	097
10cm päikesevoog	110
AK Chambon La Forêt	017
AK Wingst	012
Hinnanguline Ap	014
Hinnanguline rahvusvaheline päikeselaikude arv	052 - Põhineb 15 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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