Key Words
photosphere
chromosphere
corona
convective zone
radiative zone
core
Frauenhofer lines
hydrogen
helium
helioseismology
velocity field
Standard Solar Model
hydrostatic equilibrium
solar luminosity
solar constant
SOHO
hydrogen-alpha
opaque
transparent
limb darkening
stellar opacity
optical depth
granulation
convection currents
supergranules
spicules
flash spectrum
sunspots
umbra
penumbra
sunspot cycle
sunspot maximum
sunspot minimum
active Sun
quiet Sun
Maunder Minimum
Zeeman effect
magnetic polarity
magnetic cycle
Maunder butterfly diagram
dynamo effect
differential rotation
magnetogram
Babcock dynamo model
active regions
prominences
solar flares
coronal mass ejections
quiescent prominence
eruptive prominence
plages
geomagnetic storms
coronagraph
helmet streamers
solar wind
coronal holes