- Something is happening with the sun - again. Question,
what and why? I have been observing the sun since the first days of the
internet's existence, usually on a daily basis. Some unique images have
been saved from these observations.
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- Below are two images of the sun, taken almost 6 months
apart. Both were taken at a wavelength of 28.4nm. This is in the gamma
ray spectrum. (To put this wavelength into perspective with light, red
pocket laser light has a wavelength 650nm. Deep ultraviolet used for eyesight
correction is 100nm.) The sun rotates west to east as viewed from earth.
(Astronomers have given the sun the same N,S, E and W names as earth to
simplify references to our star. North is at the top.)
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- The top image was taken on January 16th 2005. Note the
darkened area on the left side of the image. In most of the 28.4 images
I've observed, they usually bright yellow or white. Rarely do we see dark
areas this size as shown in this image below:
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- Today, on June 27 2005 there was a similar repeat of
the above event, except this one is considerably larger and rotated slightly.
The NASA satellite which takes x-ray images at several wavelengths (including
28.4nm) has just emerged from a CCD bake-out. This bake-out period lasted
more than a week. It is used to re-condition the CCD imaging chip after
being bathed in solar radiation for months at a time.
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- The image below was taken after the bake-out was completed.
Also visible is missing data. It is unknown whether this is a data dropout
that no one bothered to clean up by commanding the satellite to re-transmit
the image, or if there is some other reason for it.
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- The question remains - why are these patterns repeating?
You will also note that the noise level contains fewer speckles.
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- Could increased solar activity have forced NASA to raise
the black level of the image to prevent over-saturation? Or perhaps the
SNR (signal to noise ratio) is better than it was in January. This may
be what we see here. Perhaps these images might be evaluated by thunderbolts.info
using their electric solar theory.
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- Ted Twietmeyer
- www.data4science.net
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