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A correction:
Watch the huge CME erupt from the M1.4 Magnitude X-ray flare ... LASCO C2
view:
<http://www.youtube.com/watch?v=SAz4EMs1M-c>
On Thu, 27 Jan 2011 23:01:17 -0700, Tomas Hood (NW7US)
<nw7us@sunspotwatch.com> wrote:
> At 0104 UTC, 28 January 2011, an X-ray flare with a flux magnitude of
> M1.4 erupted, unleasing a coronal mass ejection. The associated coronal
> mass
> ejection was not directed toward Earth, so it will not affect radio
> propagation at all. The only affect was the immediate (within eight
> minutes) where there was a short-lived Sudden Ionospheric Disturbance on
> lower frequencies, and, there was also a Type II radio burst (a rushing
> wind sound on HF).
>
> The source of the eruption was the active sunspot region 11149 (and
> possibly involved the region 11147, which is north of 11149). These have
> now rotated out of view from Earth. That's why the CME is not heading
> our way. it erupted out into space away from us.
>
> Here are a few movies I've posted:
>
> The actual flare and CME as seen at the 304 Angstrom wavelength:
>
> <http://www.youtube.com/watch?v=hMCgrJWTtR0 >
>
> The CME as seen by LASCO C2:
>
> <http://www.youtube.com/watch?v=SAz4EMs1M-c>
>
>
> The active Sunspot regions 11147 and 11149, showing flares and surges
> prior to the M1.4 Magnitude flare:
>
> <http://www.youtube.com/watch?v=dW2IgXy53U0 >
>
--
73 de NW7US,
Tomas David Hood
Hamilton, Montana
<http://nw7us.us/> and <http://tomas-david-hood.com/>
Contributing editor, Propagation Columns:
CQ Magazine, CQ VHF, Popular Communications
<http://sunspotwatch.com/>
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