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Ongoing Work/Future Project

For as astrophysical black hole, the analogue temperature is many orders of magnitude lower compared with the fluid temperature of accreting matter. However, the study of analogue effects may be measurably significant for accretion onto primordial black holes because the analogue as well as the actual Hawking temperature may be considerably high for such situations. There may be a possibility that intense Hawking radiation may not allow any accretion due to the domination of strong radiation pressure. However, the situation may be completely different for Randall-Sundrum type II cosmology, where during the high energy regime of braneworld cosmology, accretion may have significant effects on increasing the mass of the primordial black holes. In braneworld scenario, the accretion onto the primordial black holes from surrounding radiation bath may completely dominate over the evaporation process as long as radiation dominations persists. We plan to investigate the analogue effects in primordial black hole accretion in Randall-Sundrum type - II cosmology, to study whether analogue radiation can really dominate over the accretion phase, resulting the enhancement of the black hole evaporation process. We would also like to investigate whether the first `black hole explosions' due to Hawking radiation would be acoustic-mediated explosions of the medium surrounding the primordial black holes.
next up previous
Next: Related Publications Up: Analogue Gravity Phenomena: Hawking Previous: Research Accomplished
Tapas Kumar Das 2009-01-17