Does the mass of a black hole decrease due to the accretion of phantom energy?

Journal Article · Tue Jul 15 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.024008· OSTI ID:21250358

Changjun, Gao; Xuelei, Chen; Faraoni, Valerio; Yougen, Shen ^[1]

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1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012 (China)

According to Babichev et al., the accretion of a phantom test fluid onto a Schwarzschild black hole will induce the mass of the black hole to decrease, however the backreaction was ignored in their calculation. Using new exact solutions describing black holes in a background Friedmann-Robertson-Walker universe, we find that the physical black hole mass may instead increase due to the accretion of phantom energy. If this is the case, and the future universe is dominated by phantom dark energy, the black hole apparent horizon and the cosmic apparent horizon will eventually coincide and, after that, the black hole singularity will become naked in finite comoving time before the big rip occurs, violating the cosmic censorship conjecture.

• OSTI ID: 21250358
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
99 GENERAL AND MISCELLANEOUS
BLACK HOLES
EXACT SOLUTIONS
FLUIDS
MASS
NONLUMINOUS MATTER
SIMULATION
SINGULARITY
UNIVERSE