Coda: This process of momentum transfer and line driving is fascinating and powerful. But why isnít it the explanation for the solar wind?
How much momentum is required?
The total rate of momentum being lost in radiation is L/c, where L is the luminosity of the star in ergs s-1
The total rate of momentum being taken away in the wind is just Mlossvinf, where Mloss is the mass-loss rate in solar masses per year (Msun yr-1) and vinf is the terminal velocity of the wind
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