[MontelLUG] mega flare

[Kappe]

Un po' di pillole prima di iniziare il progetto pinguini sotto le stelle...

In parole povere il sole ha prodotto un flare potentissimo, che non 
doveva esserci in questo periodo di quiete. Purtroppo questo evento, 
sfiorandoci, non provocherà aurore anche alle nostre latitudini.

siti interessanti:

http://www.paolobussola.com/aurora_alert.html
http://www.spacew.com/
http://www.spaceweather.com/

SOLAR FLARE:  On Sept. 7th at 1740 UT (1:40 p.m. EDT), Earth-orbiting 
satellites detected a major X17-class solar flare coming from the sun's 
eastern limb. The blast caused a complete blackout of HF radio 
transmissions on the daylit side of Earth. Emergency personnel in 
hurricane-hit areas of the U.S. Gulf Coast may have experienced problems 
with their communications gear for minutes to hours after the flare.

Right: A false-color X-ray image from space. The dim green disk is the 
sun. The bright white spot is the solar flare. Credit: NOAA/SXI.

The source of the flare was returning sunspot 798, which sparked strong 
auroras in late August. Two weeks of quiet followed those storms while 
the sunspot transited the farside of the sun--but now it's back, and 
it's turning toward our planet again. Explosions later this week and 
next could produce some lovely September auroras. Stay tuned!


ciao
Rik

-- 
~ Melius est asinus vivus quam doctor mortuus ~
   (Prof. C.Zambet)
   ^__^