Evolution of broad emission lines from double-peaked to single-peaked to support a central tidal-disruption event

Open Access

Fig. 4.

Top left panel shows dependence of R_ij on $t_{ij}^{2 / 3}$ $t_{ij}^{2/3}$ . Solid red line shows $R_{ij} = t_{ij}^{2 / 3}$ $R_{ij} = t_{ij}^{2/3}$ , based on the parameters determined by the elliptical accretion-disk model. Top right panel shows the dependence of ΔR_ij on Fr_t, based on the parameters determined by the elliptical accretion-disk model. In the top right panel, the dashed red line and solid red line show the Fr $_{t} = Δ R_{ij} \frac{{(G M_{BH} π)}^{2 / 3}}{2 c^{2}}$ $_t=\Delta R_{ij}\frac{(GM_{\mathrm{BH}}\pi)^{2/3}}{2c^2}$ and Fr $_{t} = 6.5 Δ R_{ij} \frac{{(G M_{BH} π)}^{2 / 3}}{2 c^{2}}$ $_t = 6.5\Delta R_{ij}\frac{(GM_{\mathrm{BH}}\pi)^{2/3}}{2c^2}$ , respectively. Bottom panels show corresponding results based on the parameters determined by the circular accretion-disk plus spiral-arm model. In bottom left panel, the solid red line shows $R_{ij} = t_{ij}^{2 / 3}$ $R_{ij} = t_{ij}^{2/3}$ . In the bottom right panel, the dashed red line and solid red line show the Fr $_{t} = Δ R_{ij} \frac{{(G M_{BH} π)}^{2 / 3}}{2 c^{2}}$ $_t=\Delta R_{ij}\frac{(GM_{\mathrm{BH}}\pi)^{2/3}}{2c^2}$ and Fr $_{t} = 10.5 Δ R_{ij} \frac{{(G M_{BH} π)}^{2 / 3}}{2 c^{2}}$ $_t = 10.5\Delta R_{ij}\frac{(GM_{\mathrm{BH}}\pi)^{2/3}}{2c^2}$ , respectively.

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