Polarization at low frequencies: origin?
•
Example of large-
scale polarization at
1.4 GHz where the
sense of V matches
the underlying
large-scale
plage/network
field
•
Weak gyro or
bremsstrahlung
? At
1.4 GHz need 170
G (3
rd
harmonic) or
125 G (4
th
), so gyro
is unlikely