1998 (IPP)

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End date: 2015Subject: search.filters.subject.Black hole

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    Classical essence of black hole radiation
    (2015-03-14) Nouri-Zonoz, M.; Padmanabhan, T.
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    Doing it with mirrors : Classical analogues for black hole radiation
    (2015-03-14) Srinivasan, K.; Padmanabhan, T.
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    On the brown-york quasilocal energy, gravitational charge, and black hole event horizons
    (2015-03-13) Bose, Sukanta; Dadhich, Naresh
    We prove the recently proposed identity for certain black hole spacetimes that relates the difference of the Brown-York quasilocal energy and the Komar charge at the event horizon of the hole to the total energy of the spacetime. We prove this identity for the Kerr-Newman family of black hole spacetimes and for non-static (cosmological) spherically symmetric shear-free perfect fluid solutions of general relativity that contain black hole event horizons. We explicitly demonstrate its validity by applying it to several asymptotically fiat as well as non-fiat black hole solutions, including the case of a black hole with a global monopole charge.
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    Localized branes and black holes
    (2015-03-11) Surya, Sumati; Marolf , Donald
    We address the delocalization of low dimensional D-branes and NS-branes when they are a part of a higher dimensional BPS black brane, and the homogeneity of the resulting horizon. We show that the effective delocalization of such branes is a classical effect that occurs when localized branes are brought together. Thus, the fact that the ~ew known solutions with inhomogeneous horizons are highly singular need not indicate a singularity of generic D- and NS-brane states. Rather, these singular solutions are likely to be unphysical as they cannot be constructed from localized branes which are brought together from a finite separation.