Comments and questions about the
APOD on the main view screen.
-
Guest
Post
by Guest » Tue Feb 17, 2015 8:39 am
Oddly enough, these solar fibrils remind me of the little structures amid iron filings on a piece of paper when
held over a magnet. Are solar fibrils essentially like magnetized iron filings writ massively large and energized?
-
bactame
- Ensign
- Posts: 73
- Joined: Sun Jan 24, 2010 10:25 am
Post
by bactame » Tue Feb 17, 2015 9:44 am
Well the color and density of blooms pretty well matches my Lucille Ball, petals though make this flower an aster.
-
Dad is watching
Post
by Dad is watching » Tue Feb 17, 2015 12:51 pm
Are there any signs of internal electric currents, similar to Telluric currents, that have been seen on the sun. Any chance that these fibrils are self contained 'metallic hydrogen' rope-like structures that constrain themselves as a result of their own localized magnetic fields that occur along their length as a result of internal 'electric flow, all directed and aligned by some underlying (and more powerful) magnetic sub-surface anomaly?
-
Boomer12k
- :---[===] *
- Posts: 2691
- Joined: Sun Apr 22, 2007 12:07 am
Post
by Boomer12k » Tue Feb 17, 2015 1:10 pm
Amazing....
:---[===] *
-
Chris Peterson
- Abominable Snowman
- Posts: 18459
- Joined: Wed Jan 31, 2007 11:13 pm
- Location: Guffey, Colorado, USA
-
Contact:
Post
by Chris Peterson » Tue Feb 17, 2015 2:56 pm
Guest wrote:Oddly enough, these solar fibrils remind me of the little structures amid iron filings on a piece of paper when
held over a magnet. Are solar fibrils essentially like magnetized iron filings writ massively large and energized?
Similar in many respects. Both consist of physical material tracing out magnetic field lines. In the case of iron, we have a ferromagnetic material. What's going on in the fibrils is less well understood, but is related to the movement of charged particles in a magnetic field (and not a ferromagnetic effect).
-
JohnD
- Tea Time, Guv! Cheerio!
- Posts: 1585
- Joined: Wed Feb 16, 2005 2:11 pm
- Location: Lancaster, England
Post
by JohnD » Tue Feb 17, 2015 3:38 pm
Indeed, a rose is not a rose just because the APOD calls it one.
But the resemblance is there, especially of flowers whose heads are a mass of individual florets.
Those have been studied by mathematicians who have found the maths that govern their arrangement.
From dandelions (
https://deepfriar.wordpress.com/2011/05 ... -on-weeds/) to Sunflowers (
http://www.popmath.org.uk/rpamaths/rpam ... lower.html), Fibonacci rules.
Fibonacci, and also phi, the Golden Ratio.
I don't see that much regularity in that splendid prominence - has anyone looked them in the same way?
JOhn
-
Chris Peterson
- Abominable Snowman
- Posts: 18459
- Joined: Wed Jan 31, 2007 11:13 pm
- Location: Guffey, Colorado, USA
-
Contact:
Post
by Chris Peterson » Tue Feb 17, 2015 3:55 pm
JohnD wrote:I don't see that much regularity in that splendid prominence - has anyone looked them in the same way?
Flowers show a pattern of mathematical progression because of the way they grow. There is no analog to biological growth with these magnetic regions, so no reason to expect that kind of structure.
-
starsurfer
- Stellar Cartographer
- Posts: 5409
- Joined: Thu Mar 15, 2012 7:25 pm
Post
by starsurfer » Tue Feb 17, 2015 5:07 pm
For no particular reason, I was expecting to see M63, the Sunflower Galaxy based on yesterday's clue.
-
JohnD
- Tea Time, Guv! Cheerio!
- Posts: 1585
- Joined: Wed Feb 16, 2005 2:11 pm
- Location: Lancaster, England
Post
by JohnD » Tue Feb 17, 2015 6:47 pm
Chris Peterson wrote:JohnD wrote:I don't see that much regularity in that splendid prominence - has anyone looked them in the same way?
Flowers show a pattern of mathematical progression because of the way they grow. There is no analog to biological growth with these magnetic regions, so no reason to expect that kind of structure.
Well, it was APOD that entitled the pic "Fibrils
Flower on the Sun".
J
-
FloridaMike
- Science Officer
- Posts: 413
- Joined: Fri Nov 04, 2011 2:21 pm
- Location: Florida, USA
Post
by FloridaMike » Tue Feb 17, 2015 8:36 pm
Todays image illustrates the importance of being able to see subtitle contrast. Most observations of this region would reveal nothing but monotonous oversaturation; hiding the true complexity of what we see. Such observations may lead one to believe there is nothing worth studying here. However, the right equipment in the hands of an experienced observer reveals a more interesting truth.
Certainty is an emotion. So follow your spindle neurons.
-
anon
Post
by anon » Tue Feb 17, 2015 9:45 pm
The description is inaccurate and wrong. There are no spicules in this image, only something that resembles the behaviour of dynamic fibrils.[youtube]
-
ccheers
Post
by ccheers » Tue Feb 17, 2015 9:56 pm
Suspect the commentator on this picture is a better astronomer than gardener. Great picture though.
-
Chris Peterson
- Abominable Snowman
- Posts: 18459
- Joined: Wed Jan 31, 2007 11:13 pm
- Location: Guffey, Colorado, USA
-
Contact:
Post
by Chris Peterson » Tue Feb 17, 2015 10:09 pm
FloridaMike wrote:Todays image illustrates the importance of being able to see subtitle contrast. Most observations of this region would reveal nothing but monotonous oversaturation; hiding the true complexity of what we see. Such observations may lead one to believe there is nothing worth studying here. However, the right equipment in the hands of an experienced observer reveals a more interesting truth.
An example of poor subtitle contrast?
Imaging the Sun
Our Star Illustrated
-
Nitpicker
- Inverse Square
- Posts: 2692
- Joined: Fri Sep 20, 2013 2:39 am
- Location: S27 E153
Post
by Nitpicker » Wed Feb 18, 2015 12:26 am
Chris Peterson wrote:FloridaMike wrote:Todays image illustrates the importance of being able to see subtitle contrast. Most observations of this region would reveal nothing but monotonous oversaturation; hiding the true complexity of what we see. Such observations may lead one to believe there is nothing worth studying here. However, the right equipment in the hands of an experienced observer reveals a more interesting truth.
An example of poor subtitle contrast?
Imaging the Sun
Our Star Illustrated
Too subtle?
-
Chris Peterson
- Abominable Snowman
- Posts: 18459
- Joined: Wed Jan 31, 2007 11:13 pm
- Location: Guffey, Colorado, USA
-
Contact:
Post
by Chris Peterson » Wed Feb 18, 2015 1:00 am
Nitpicker wrote:Chris Peterson wrote:
An example of poor subtitle contrast?
Imaging the Sun
Our Star Illustrated
Too subtle?
Suitable subtlety.