Posted on 05/21/2018 9:44:47 PM PDT by BenLurkin
"Solar Rossby waves are gigantic in size, with wavelengths comparable to the solar radius," study co-author Laurent Gizon, of the Max Planck Institute for Solar System Research, said in a statement. (The average radius of the sun is a whopping 432,450 miles, or 696,000 kilometers.)
Even so, these waves move very slowly, with shallow troughs and peaks, so they aren't always easy to detect, especially amid the other swirls and disturbances on a body as lively as the sun.
…
Researchers from the Max Planck Institute for Solar System Research, the University of Göttingen (both in Germany), New York University Abu Dhabi and Stanford University analyzed data from the SDO's Helioseismic and Magnetic Imager instrument. They focused on bubble-like granules on the visible surface of the sun, called the photosphere. These granules — each about 600 miles (1,000 kilometers) across, according to NASA — are the peak of convection cells, where heated material from the sun's interior pops up toward the surface, spreads out and then cools, sinking down along the dark lines that divide the granules. According to NASA, these granules are hyperintense, with materials bubbling up as fast as 15,000 mph (more than 24,000 km/h).
The movements of these granules revealed underlying Rossby waves, the researchers reported May 7 in the journal Nature Astronomy.
The researchers found that the waves occur deep below the surface of the sun, about 12,400 miles (20,000 km) in its interior.
They estimate that the waves are responsible for about half of the sun's kinetic energy, making them key to understanding the star's internal dynamics.
"All in all...large-scale waves of vorticity on the sun that move in the direction opposite to rotation."
(Excerpt) Read more at space.com ...
“Surf’s up dude! Gonna need about a 1000 Sunscreen rated cream, however.”
You won’t need sunscreen if you go at night.
The researchers found that the waves occur deep below the surface of the sun, about 12,400 miles (20,000 km) in its interior.
Wait, if the radius of the sun is 432,450 miles
making the diameter 864,900 miles, can 12,400 miles
be said to be “deep below the surface of the sun???
(The average radius of the sun is a whopping 432,450 miles, or 696,000 kilometers.)
Excess precision from a conversion from metric to English units. Really, the metric original shows excessive precision as well, given that the edge is undefined - but ya gotta work with something.
Luke Skywalker and Sheldon’s grandmother? Ewwww.
It’s deeper than I want to swim.
*ping*
HANG TEN!
Thanks fieldmarshaldj.
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Annie Potts was SMOKE’N in that movie. so was the car. left hand drive an all.
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