Image Details
Caption: Figure 13.
Rays emitted by a tiny explosion near the ISCO of a SMBH converge into a gravitational caustic in a direction nearly antipodal to the explosion site. Rays propagating near the BH equator are also reflected by annular fragments of a warped H/He disk concentrated around radius Rw given by Equation (28). Reflection produces an additional geometrical delay depending on the angular offsets αobs and α from the BH equator of the observer and of the outgoing ray before reflection. Fluence transported by the ray diverges as ∼α−1, and therefore decreases with geometrical delay (relative to unreflected rays) as ∼t−1/2 for ﹩t\gt {\alpha }_{\mathrm{obs}}^{2}{R}_{m}/2c﹩.
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