High Energy Physics - Theory
[Submitted on 28 Apr 2004 (v1), last revised 29 Jul 2004 (this version, v2)]
Title:Accretion of Ghost Condensate by Black Holes
View PDFAbstract: The intent of this letter is to point out that the accretion of a ghost condensate by black holes could be extremely efficient. We analyze steady-state spherically symmetric flows of the ghost fluid in the gravitational field of a Schwarzschild black hole and calculate the accretion rate. Unlike minimally coupled scalar field or quintessence, the accretion rate is set not by the cosmological energy density of the field, but by the energy scale of the ghost condensate theory. If hydrodynamical flow is established, it could be as high as tenth of a solar mass per second for 10MeV-scale ghost condensate accreting onto a stellar-sized black hole, which puts serious constraints on the parameters of the ghost condensate model.
Submission history
From: Andrei V. Frolov [view email][v1] Wed, 28 Apr 2004 06:59:55 UTC (152 KB)
[v2] Thu, 29 Jul 2004 05:00:51 UTC (154 KB)
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