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Pre-main-sequence star

{title2=$L_{\rm acc}$}

Matter accreting at rate $\dot M$ onto a star of mass $M$ and radius $R$ releases gravitational power of order
$$
L_{\rm acc}=\frac{GM\dot M}{R},
$$
up to an efficiency and an inner-boundary correction.


Accretion luminosity

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X-ray binary

Accretion luminosity ( $L_{acc}$ )

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Accretion luminosity (Lacc​)

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Accretion luminosity ( $L_{acc}$ )

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