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Entropy creation and black hole spin down in GRBs from rotating black holes

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Some of the most remarkable processes in the Universe appear to involve black holes, in stellar evolution and mergers from the era of reionization to the present. By frame dragging, rapidly rotating black holes may radiate in various emission channels including gamma-rays during interactions with high density matter formed in core-collapse of massive stars and mergers of compact objects. Black holes are scale free, which suggests that the light curves of their emissions are normalizable in duration and count rate, upon averaging out short time scale fluctuations. We shall report on recent evidence for black hole spin down in a normalized light curve extracted from the BATSE catalogue with an outlook on long duration bursts in radio and gravitational waves of interest to LOFAR , LIGO-Virgo and the recently funded LCGT .

This talk is part of the Cosmology Lunch series.

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