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Solar physics meeting at IIA, Bangalore

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Babcock–Leighton alpha effect: (Babcock 1961; Leighton 1969)<br />

S<br />

α<br />

=<br />

α<br />

B<br />

1 ⎡ r−r1 ⎤⎡ r−r2<br />

⎤<br />

0 θ<br />

1 +<br />

( ) 1 ( ) ith 0<br />

⎢<br />

erf<br />

⎥⎢<br />

erf<br />

⎥ 25 /<br />

1 2<br />

α = α cos θ 1 + ( ) 1 − ( ) with = 25 m/s<br />

4⎣ d ⎦⎣ d ⎦<br />

α

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