Temperature evolution due to heating by the viscous dissipation of f-mode excitations. Top: numerical (blue) and analytic (red; Eq. (20)) results obtained for a symmetric binary consisting of stars with 1.23 M_⊙ and the EOS APR4. Bottom: ratio of the temperature between a varying t_p and t_p = −20 s corresponding to thermal ramping. In both panels, the vertical lines mark the timing of the first and second precursor of SGRB 090510, and their thickness indicates the 50 ms error for each timing.