Journal
ASTROPHYSICS AND SPACE SCIENCE
Volume 360, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/s10509-015-2519-9
Keywords
Stringy electrically charged black hole; Dark energy; Chaplygin gas
Categories
Funding
- National Natural Science Foundation of China [11565016, 11405076]
- Science Foundation of the Education Department of Yunnan Province [2014Y066]
- Talent Cultivation Foundation of Kunming University of Science and Technology [KKSY201207053, KKSY201356060]
- Introduced High-level Talents of Yunnan Province from Department of Human Resources and Social Security of Yunnan Province
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This paper studies the accretion of dark energy onto a stringy electrically charged black hole. Solution for a general spherical accretion of the ideal fluid onto a black hole is given first. It is shown that the location of the critical point lies inside the event horizon. In our paper, two solvable models of dark energy are considered. For the linearized model, the expression for the mass of the black hole is derived. And for the Chaplygin gas model, the change rate of the black hole mass is obtained. The results show that the mass of the stringy electrically charged black hole is fixed when rho + p = 0, but decreases at rho + p < 0 and increases at rho + p > 0. Then, we conclude that the accretion of phantomlike dark energy makes the mass of the black hole decrease, and the accretion of the quintessence-like dark energy can increase the black hole mass. The bigger the absolute value of the pressure is, the faster the black hole mass decreases.
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