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Fig. 13.
Roche radius rR as a function of the mean density ρ of the star (in solar units), for two values of the MBH spin a and two rotational states of the star: irrotational (χ = 0) and corotating (χ = 1). The blue (resp. red) dotted horizontal line marks the ISCO radius for a = 0 (resp. a = 0.98 M).
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