[AMRadio] Holes in the sun.
manualman at juno.com
manualman at juno.com
Mon Jul 29 16:53:52 EDT 2019
Also, be aware that the major Perseids meteor shower is active till
around 8/26. Predicted peak will be around 8/12 to 8/13. So, if you're so
inclined to bounce your AM signal off meteor trails, aim that antenna up.
Pete, wa2cwa
On Mon, 29 Jul 2019 14:43:47 -0500 <w5jo at brightok.net> writes:
> From Space Weather.
>
> http://www.spaceweather.com/
>
> HOLES IN THE SUN'S ATMOSPHERE: Earth is about to be strobed by three
> streams
> of solar wind--each flowing from a hole the sun's atmosphere. NASA's
> Solar
> Dynamics Observatory photographed the gaseous spigots on July 29th:
>
> These are "coronal holes"--places where the sun's magnetic field
> peels back
> and allows solar wind to escape. Coronal holes look dark in extreme
>
> ultraviolet images of the sun because glowing-hot plasma normally
> contained
> there is missing.
> The first of the streams is expected to arrive on Aug 1st, followed
> by two
> more in rapid succession on Aug. 4th. Polar geomagnetic unrest and
> possibly
> some minor magnetic storms are possible on those dates.
> High-latitude sky
> watchers should be alert for auroras, especially in the southern
> hemisphere
> where winter darkness favors visibility
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