COMMENTS ON ABSORPTION CROSS-SECTION FOR CHERN-SIMONS BLACK HOLES IN FIVE DIMENSIONS

In this paper we study the effects of black hole mass on the absorption cross-section for a massive scalar field propagating in a five-dimensional topological Chern-Simons black hole at the low-frequency limit. We consider the two branches of black hole solutions (alpha = +/- 1) and we show that, if the mass of black hole increase the absorption cross-section decreases at the zero-frequency limit for the branch alpha = -1 and for the other branch, alpha = 1, the behavior is opposite, if the black hole mass increase the absorption cross-section increases. Also we find that beyond a certain frequency value, the mass black hole does not affect the absorption cross-section.