Journal
PHYSICAL REVIEW D
Volume 88, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.104007
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Funding
- National Natural Science Foundation of China [11247013]
- Hunan Provincial NSFC [11JJ3014]
- Scientific Research Fund of the Hunan Provincial Education Department [11B067]
- Foundation for the Author of Hunan Provincial Excellent Doctoral Dissertation [YB2012B034]
- Aid program for the Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
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We study the influence of phantom fields on strong field gravitational lensing. Supposing that the gravitational field of the supermassive central object of the Galaxy is described by a phantom black hole metric, we estimate the numerical values of the coefficients and observations and find that the influence of the phantom fields is somewhat similar to that of the electric charge in a Reissner-Nordstrom black hole, i.e., the deflect angle and angular separation increase with the phantom constant b. However, other observations are contrary to the Reissner-Nordstrom case and show the effects of dark energy, such as (i) compressing the usual black hole and more powerfully attracting photons, (ii) making the relativistic Einstein ring larger than that of the usual black hole, and (iii) not weakening the usual relative magnitudes, which will facilitate observations.
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