It is given by:
\[ L_{\text{Edd}} = \frac{4\pi G M m_p c}{\sigma_T} \]
where:
- \( G \) is the gravitational constant,
- \( M \) is the mass of the star,
- \( m_p \) is the mass of a proton,
- \( c \) is the speed of light, and
- \( \sigma_T \) is the Thomson
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