Vaata kolmapäev, 2 aprill 2014 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2014 Apr 02 1244 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Päikese prootonid

Quiet

	10 cm vool	Ap
02 Apr 2014	153	022
03 Apr 2014	154	011
04 Apr 2014	154	007

Bülletään

Solar flaring activity was limited to about a dozen of low level C class flares. Most of them originated from NOAA AR 2026, with the strongest one peaking at 06:08 UT, April 2, at C3.5 level. Others originated from NOAA AR 2022, 2027, and 2029. The eruption of a filament located to the south-east of NOAA AR 2021, triggered a faint halo CME which was visible in LASCO COR 2 images from April 1, 16:48 UT onwards. The bulk of the CME was expelled in eastern direction and directed slightly south. CACTus software only detected multiple fragments of the event. The projected speed as estimated from Stereo B COR2 is about 300 km/s. Hence, the arrival of the perturbation can be expected around late April 4 and early April 6, probably only causing merely unsettled to active geomagnetic conditions. This halo CME was immediately followed by a faster partial halo CME, first visible in LASCO C2 images at 19:00 UT, April 1. In STEREO B COR2 the event is first visible at 19:25 UT. CACTus underestimated its angular width, which from manual detection is estimated to be around 160 degrees, with the main component directed in west southwest direction. It does not seem to be related to any front side activity and we therefore do not expect the CME to be geoeffective. However, since the event could neither be clearly related to any activity on the back side, the source of the CME remains yet undetermined. The solar wind speed is steady between 400 and 450 km/s with total field still around 5 nT. There are yet no signs of the expected arrival of the CMEs of March 28, 29, and 30. Unsettled conditions to minor storm levels can still be expected over the next days when/if these CMEs arrive.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 083, põhineb 16 jaamadel.

Päikese indeksid 01 Apr 2014

Catania Wolfi number	109
10cm päikesevoog	153
AK Chambon La Forêt	014
AK Wingst	005
Hinnanguline Ap	006
Hinnanguline rahvusvaheline päikeselaikude arv	074 - Põhineb 25 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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