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Op zondag 2 oktober 2011 12:50 schreef DemonRage het volgende:De uitbarstingen waren van zonnevlekken 1302 (die hele grote) en 1305 (ook niet echt een kleintje en recht op de aarde gericht). 1305 heeft een CME afgeschoten die ons op 4 oktober bereikt.
Spaceweather.comHet valt me trouwens op dat er nog geen klasseringen zijn voor deze zonnevlammen.
Zoiets.....
ClassificationThe Sun shows a C3-class solar flare (white area on upper left), a solar tsunami (wave-like structure, upper right) and multiple filaments of magnetism lifting off the stellar surface.
Solar flares are classified as A, B, C, M or X according to the peak flux (in watts per square meter, W/m2) of 100 to 800 picometer X-rays near Earth, as measured on the GOES spacecraft. Each class has a peak flux ten times greater than the preceding one, with X class flares having a peak flux of order 10−4 W/m2. Within a class there is a linear scale from 1 to 9, so an X2 flare is twice as powerful as an X1 flare, and is four times more powerful than an M5 flare. The more powerful M and X class flares are often associated with a variety of effects on the near-Earth space environment. This extended logarithmic classification is necessary because the total energies of flares range over many orders of magnitude, following a uniform distribution with flare frequency roughly proportional to the inverse of the total energy. Stellar flares and earthquakes show similar power-law distributions.[5]
Another flare classification is based on Hα spectral observations. The scheme uses both the intensity and emitting surface. The classification in intensity is qualitative, referring the flares as: (f)aint, (n)ormal or (b)rilliant. The emitting surface is measured in terms of millionths of the hemisphere and is described below (The total hemisphere area AH=6.2 1012 km2.)
Classification ........ Corrected Area [millionths of hemisphere]
S.............................< 100
1.................................100 - 250
2.................................250 - 600
3.................................600 - 1200
4..............................> 1200
A flare then is classified taking S or a number that represents its size and a letter that represents its peak intensity, v.g.: Sn is a normal subflare
Classificatie ZonnevlammenWetenschappers classificeren zonnevlammen volgens de helderheid in de röntgenstraling.
Er zijn drie categorieën:
de
X-klasse is zeer groot,
het zijn enorme gebeurtenissen die de oorzaak kunnen zijn van radio storingen over de hele Aarde en veroorzaken langdurige stralingsstormen in de bovenste lagen van de atmosfeer.
de
M-klasse vlammen zijn middelmaat van grootte;
zij veroorzaken korte radiostoringen voornamelijk op hoge noorder en zuider breedtegraden. Geringe stralingsstormen volgen soms na een M-klasse vlam.
Vergeleken met X en M klasse gebeurtenissen
zijn C klasse vlammen klein en nauwelijks merkbaar op Aarde