Solar physics meeting at IIA, Bangalore
Solar physics meeting at IIA, Bangalore
Solar physics meeting at IIA, Bangalore
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• Induction equ<strong>at</strong>ion:<br />
∂<br />
B<br />
∂<br />
t<br />
= ∇ × ( v × B ) + η ∇ B<br />
2<br />
• Magnetic Reynolds Number:<br />
VB / L<br />
R Rm<br />
= =<br />
ηB/<br />
L<br />
2<br />
VL<br />
η<br />
• In Astrophysical systems, R m usually high, magnetic fields<br />
move with plasma – flux is frozen (Alfven, 1942).<br />
• Magnetoconvection (Chandrasekhar 1952, Weiss 1981) –<br />
convective region gets separ<strong>at</strong>ed into non-magnetic and<br />
magnetic space – the l<strong>at</strong>ter constitutes flux tubes.
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