11
Detailed
structure of the outer photosphere
•CONVECTION:
–Granulation
and Supergranulation
–Heat
carried by actual motion of gas
–Different
than radiative transport
•energy
carried by photons
•dominates
deeper in sun
•SUNSPOTS
–Darker
(and cooler) regions of sun
–Strong
magnetic fields limit convection
–Come
and go in 11 (really 22) year cycle
–Magnetic
energy releases cause “flares”
–Material
ejected causes aurora
From our text: Horizons, by Seeds