MG12 - Talk detail |
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Participant |
Crispino, Luis | |
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Institution |
Federal University of Pará, Brazil - Rua Augusto Corrêa, 01 - Belém - Pará - Brazil | |
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Session |
Talk |
Abstract |
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SQG5 |
Absorption of waves by static black holes and canonical acoustic holes |
After a brief historical review on the subject, we present the Schwarzschild and Reissner-Nordström black hole absorption cross sections for massless scalar waves with arbitrary frequencies, as well as the canonical acoustic hole absorption cross section for sound waves with arbitrary frequencies. We point out their differences and similarities, comparing these absorption cross sections with the ones obtained for massless waves with spin 1/2, 1 and 2 in Schwarzschild spacetime. |